{"title":"68RFE Transmissions","description":null,"products":[{"product_id":"68rfe-category-1-450hp-no-converter-copy","title":"68RFE Category 1 Transmission - 450HP","description":"\u003cp\u003eFeatures \u0026amp; Benefits\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e- New Sonnax Smart Tech Overdrive Drum Assembly\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Washer Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Bearing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Complete Gasket and Sealing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Spin-on Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Pan Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Underdrive and Overdrive piston set\u003c\/li\u003e\n\u003cli\u003e- Upgraded 2C Clutch Set\u003c\/li\u003e\n\u003cli\u003e- 68RFE Billet 2C Piston\u003c\/li\u003e\n\u003cli\u003e- Suncoast Ducenti Valve body\u003c\/li\u003e\n\u003cli\u003e- Suncoast Zero Cavitation filter kit\u003c\/li\u003e\n\u003cli\u003e- SunCoast OEM Solenoid Pack \u003c\/li\u003e\n\u003cli\u003e- 450 Horsepower\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThe 68RFE\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe 68RFE transmission is the big brother to the 45\/545RFE transmission. The RFE platform was originally designed by Chrysler and was introduced in 1999 with the debut of the new Jeep Grand Cherokee. \"RFE\" stands for Rear-wheel drive Fully Electronic control. The RFE design was mostly noted in the new design to have 3 planetary sets for a 4-speed transmission in the 45RFE. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eIn 2007, Chrysler debuted the new 6.7 Powerplant in the all new Dodge Ram, and Dodge wanted a transmission that was specifically designed for function. The previous platform utilized the Torqueflite 48RE platform and had been around since the late 50's when they released the first 727 in 1956 after purchasing the license from Simpson on the gearset in 1955. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe 46\/47\/48 Chrysler platforms were 3 and 4-speed units that were mechanically and hydraulically controlled, with the most notable control system being governor pressure.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe first improvement Chrysler wanted to make over the Torqueflite platform was, obviously, the amount of forward gear. For the 68RFE transmission, Chrysler opted to change to a six-speed unit. The additional gears allowed Chrysler to add higher 1st-gear ratios and tighter shift recovery from one gear to the next. The tighter shift recovery essentially keeps the vehicle in higher averaged horsepower and torque numbers, while also adding torque multiplication.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe gear ratios were increased, as well. The new 68RFE boasts a whopping 3.23:1 first gear, compared to the 2.45:1 first gear found in the previous 47\/48RE platform. Chrysler also increased second gear to a 1.83:1 versus the 1.45:1 found previously. The 68RFE was also given two overdrive gears, with 5th being .81:1 and 6th with the very deep .62:1. The predecessor had a single overdrive that was a .69:1.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Category Transmissions\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe SunCoast Category 68RFE transmissions are designed and developed with intentions of taking a systematic approach to solving the issues with the 68RFE transmission. We approach each deficiency and need from a scientific approach.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eWe aim to offer you the most complete series of 68RFE transmissions available on the market today. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Smart Tech Drum\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe factory overdrive clutches are at a high risk of failure when towing or installing aftermarket programmers, delete kits, or larger turbos. This is in large part to the fragile and thin (.034) single-sided clutches. When exposed to increased torque or higher temperatures, they will distort, causing additional clearance and uneven apply. This will always result in burnt clutches. These clutches in the overdrive housing are, by far, the weakest link in the 68RFE transmission design.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Sonnax Smart Tech 68RFE overdrive drum addresses these issues. The new billet clutch housing holds a physically taller clutch pack, allowing the overdrive apply clutch area to increase 16%. In addition to the increased apply surface area, the thicker clutches and steels increase clutch steel mass by 28%, drastically improving the heat dissipation.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe new 68RFE overdrive clutch drum also comes with a top bolt-on plate to help eliminate clutch pack flexing and distortion that contribute to premature failure.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe 2C Piston\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe factory molded piston is prone to uneven apply which leads to excessive heat in the clutches and steels creating premature failure. In this 68RFE transmission rebuild kit we replace the factory piston with a much improved billet piece that also allows for one additional clutch further increasing surface apply area.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThese new 68RFE transmissions are designed with the builder in mind, we offer from mild to wild depending on what your needs are.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Ducenti\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eSunCoast is proud to release its new Pro-Loc Ducenti 200psi Shift Calibration Kit for the 68RFE. What we present to you today is not just a haphazardly put together solution but the cumulation of many years of refinement. \u003cbr\u003e\u003cbr\u003eIn this valve body, we address several key issues within this hydraulic circuit using a multi-faceted approach. This kit includes everything you will need to achieve 200psi without any additional tuning and is designed to be a complete drop-in. \u003cbr\u003e\u003cbr\u003eFeatures and benefits of this shift calibration kit include a new pump half, TCC limit valve, TCC switch valve, five billet three-ring accumulator pistons, billet upgraded valve body plate, an upgraded heavy duty accumulator plate, and custom-calibrated spring rates for PR circuit.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Solenoid Pack\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eEvery new Suncoast transmission receives a new OEM solenoid back from Mopar.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eZero Cavitation Filter Kit\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe factory 68rfe has had many issues with pressure relief check valve system on the transmission pan filters. Initially Chrysler had issues with the plastic filter splitting in half. This was later remedied by adding a pressure relief valve on top of the filter. This later showed to be an issue as the valve would release itself from the filter all together. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThis new bottom feeder filter kit allows the usage of a torqueflite filter. This filter conversion will not only prevent pump cavitation but will allow higher volume of fluid to be passed through the system. \u003c\/div\u003e","brand":"SunCoast Transmissions","offers":[{"title":"2007.5-2018 \/ 2WD","offer_id":51037955358939,"sku":"SC-68RFE-1-07518-2WD-LC","price":8337.35,"currency_code":"USD","in_stock":true},{"title":"2007.5-2018 \/ 4WD","offer_id":51037955391707,"sku":"SC-68RFE-1-07518-4WD-LC","price":8337.35,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 2WD","offer_id":51037955424475,"sku":"SC-68RFE-1-19UP-2WD-LC","price":7997.2,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 4WD","offer_id":51037955457243,"sku":"SC-68RFE-1-19UP-4WD-LC","price":7997.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198648443.jpg?v=1786544409"},{"product_id":"68rfe-category-2-500hp-no-converter-copy","title":"68RFE Category 2 Transmission - 500HP","description":"\u003cp\u003eFeatures \u0026amp; Benefits\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e- Sonnax Smart-Tech® Overdrive Clutch Housing Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Washer Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Bearing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Complete Gasket and Sealing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Spin-on Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Pan Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Underdrive and Overdrive piston set\u003c\/li\u003e\n\u003cli\u003e- Upgraded 2C Clutch Set\u003c\/li\u003e\n\u003cli\u003e- 68RFE Billet 2C Piston\u003c\/li\u003e\n\u003cli\u003e- Suncoast Ducenti Valve body\u003c\/li\u003e\n\u003cli\u003e- Suncoast upgraded heavy duty sprag\u003c\/li\u003e\n\u003cli\u003e- Deep Mag Hytec pan\u003c\/li\u003e\n\u003cli\u003e- Suncoast Zero Cavitation filter kit\u003c\/li\u003e\n\u003cli\u003e- SunCoast OEM Solenoid Pack \u003c\/li\u003e\n\u003cli\u003e- SunCoast 68RFE Billet Input Shaft\u003c\/li\u003e\n\u003cli\u003e- 500 Horsepower\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThe 68RFE\u003c\/div\u003e\n\u003cp\u003eThe 68RFE transmission is the big brother to the 45\/545RFE transmission. The RFE platform was originally designed by Chrysler and was introduced in 1999 with the debut of the new Jeep Grand Cherokee. \"RFE\" stands for Rear-wheel drive Fully Electronic control. The RFE design was mostly noted in the new design to have 3 planetary sets for a 4-speed transmission in the 45RFE. \u003c\/p\u003e\n\n\u003cp\u003eIn 2007, Chrysler debuted the new 6.7 Powerplant in the all new Dodge Ram, and Dodge wanted a transmission that was specifically designed for function. The previous platform utilized the Torqueflite 48RE platform and had been around since the late 50's when they released the first 727 in 1956 after purchasing the license from Simpson on the gearset in 1955\u003c\/p\u003e\n\n\u003cp\u003eThe 46\/47\/48 Chrysler platforms were 3 and 4-speed units that were mechanically and hydraulically controlled, with the most notable control system being governor pressure.\u003c\/p\u003e\n\n\u003cp\u003eThe first improvement Chrysler wanted to make over the Torqueflite platform was, obviously, the amount of forward gear. For the 68RFE transmission, Chrysler opted to change to a six-speed unit. The additional gears allowed Chrysler to add higher 1st-gear ratios and tighter shift recovery from one gear to the next. The tighter shift recovery essentially keeps the vehicle in higher averaged horsepower and torque numbers, while also adding torque multiplication.\u003c\/p\u003e\n\n\u003cp\u003eThe gear ratios were increased. as well. The new 68RFE boasts a whopping 3.23:1 first gear, compared to the 2.45:1 first gear found in the previous 47\/48RE platform. Chrysler also increased second gear to a 1.83:1 versus the 1.45:1 found previously. The 68RFE was also given two overdrive gears, with 5th being .81:1 and 6th with the very deep .62:1. The predecessor had a single overdrive that was a .69:1.\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Category Transmissions\u003c\/div\u003e\n\u003cdiv\u003eThe SunCoast Category 68RFE transmissions are designed and developed with intentions of taking a systematic approach to solving the issues with the 68RFE transmission. We approach each deficiency and need from a scientific approach.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eWe aim to offer you the most complete series of 68RFE transmissions available on the market today. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eSonnax Smart-Tech® Overdrive Clutch Housing Kit\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eDodge trucks pulling heavy loads or boosted to 500–600HP are at high risk for overdrive burnup due to the stock transmission’s insufficient clutch capacity and fragile OE clutches.\u003c\/p\u003e\n\u003cp\u003eEven small amounts of heat and extra torque will push the thin (.034\"), single-sided clutches over the edge, distorting the clutch pack. The fact is, any distortion of the clutch pack takes the clearance out of spec and makes overdrive clutch burnup inevitable.\u003c\/p\u003e\n\u003cp\u003eKeep hardworking trucks on the road with the Sonnax Smart-Tech\u003csup\u003e®\u003c\/sup\u003e overdrive clutch housing kit 72960-18K. The unique billet aluminum housing increases OD apply area by 16% and holds a physically taller clutch pack. The 2X thicker steels increase clutch pack steel mass by 28% for maximum heat dissipation. The double sided BorgWarner clutch frictions are optimized for the 68RFE OD application and custom-made for the Sonnax kit. This guarantees an unrivaled combination of squawk resistance and maximum clutch capacity for any truck.\u003c\/p\u003e\n\u003cp\u003eThis groundbreaking kit is the only top-of-the-line upgrade that eliminates clutch problems without relying on valve body\/pump modifications or adding the expense of extra components.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModified housing holds physically taller clutch pack for 20% more clutch capacity\u003c\/li\u003e\n\u003cli\u003e16% More OD apply area for firmer, more controlled shifts\u003c\/li\u003e\n\u003cli\u003e2X Thicker steels and double-sided clutches increase steel mass by 28% for maximum heat dissipation\u003c\/li\u003e\n\u003cli\u003eCustom BorgWarner clutches for maximum capacity with state-of-the-art squawk resistance.\u003c\/li\u003e\n\u003cli\u003eBolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up\u003c\/li\u003e\n\u003cli\u003eCombine with Sonnax line pressure booster kit \u003ca href=\"..\/i-30502995-line-pressure-booster-kit.html\"\u003eRFE-LB1\u003c\/a\u003e for even higher levels of performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe 2C Piston\u003c\/div\u003e\n\u003cdiv\u003eThe factory molded piston is prone to uneven apply which leads to excessive heat in the clutches and steels creating premature failure. In this 68RFE transmission rebuild kit we replace the factory piston with a much improved billet piece that also allows for one additional clutch further increasing surface apply area.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThese new 68RFE transmissions are designed with the builder in mind, we offer from mild to wild depending on what your needs are.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Ducenti\u003c\/div\u003e\n\u003cdiv\u003eSunCoast is proud to release its new Pro-Loc Ducenti 200psi Shift Calibration Kit for the 68RFE. What we present to you today is not just a haphazardly put together solution but the cumulation of many years of refinement. \u003cbr\u003e\u003cbr\u003eIn this valve body, we address several key issues within this hydraulic circuit using a multi-faceted approach. This kit includes everything you will need to achieve 200psi without any additional tuning and is designed to be a complete drop-in. \u003cbr\u003e\u003cbr\u003eFeatures and benefits of this shift calibration kit include a new pump half, TCC limit valve, TCC switch valve, five billet three-ring accumulator pistons, billet upgraded valve body plate, an upgraded heavy duty accumulator plate, and custom-calibrated spring rates for PR circuit.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Solenoid Pack\u003c\/div\u003e\n\u003cdiv\u003eEvery new Suncoast transmission receives a new OEM solenoid back from Mopar.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThe Input Shaft\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eSunCoast's 68RFE Billet Input Shaft is a high-performance upgrade designed for heavy-duty and high-torque applications. Crafted from billet 300M steel alloy, this input shaft offers exceptional yield strength, ensuring durability and reliability under extreme conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDrop-In Replacement:\u003c\/strong\u003e Designed as a direct replacement part, making it easy to install without the need for additional modifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Material:\u003c\/strong\u003e Constructed from billet 300M steel alloy, known for its high tensile strength and resilience, providing a significant upgrade over standard input shafts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeat Treated:\u003c\/strong\u003e The shaft undergoes a rigorous heat treatment process to enhance its strength and longevity, making it capable of withstanding high-stress environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Ground:\u003c\/strong\u003e The precision grinding ensures exact dimensions and a perfect fit, contributing to smoother operation and extended service life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGun Drilled:\u003c\/strong\u003e The gun drilling technique used to create the through hole eliminates stress risers commonly associated with conventional drilling procedures, reducing the risk of failure and enhancing overall performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eZero Cavitation Filter Kit\u003c\/div\u003e\n\u003cdiv\u003eThe factory 68rfe has had many issues with pressure relief check valve system on the transmission pan filters. Initially Chrysler had issues with the plastic filter splitting in half. This was later remedied by adding a pressure relief valve on top of the filter. This later showed to be an issue as the valve would release itself from the filter all together. \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eThis new bottom feeder filter kit allows the usage of a torqueflite filter. This filter conversion will not only prevent pump cavitation but will allow higher volume of fluid to be passed through the system. This will come with a specially machined Mag-Hytec pan.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SunCoast Transmissions","offers":[{"title":"2007.5-2018 \/ 2WD","offer_id":51038164549851,"sku":"SC-68RFE-2-07518-2WD-LC","price":9506.0,"currency_code":"USD","in_stock":true},{"title":"2007.5-2018 \/ 4WD","offer_id":51038164582619,"sku":"SC-68RFE-2-07518-4WD-LC","price":9506.0,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 2WD","offer_id":51038164615387,"sku":"SC-68RFE-2-19UP-2WD-LC","price":9145.85,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 4WD","offer_id":51038164648155,"sku":"SC-68RFE-2-19UP-4WD-LC","price":9145.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198648454.jpg?v=1786544411"},{"product_id":"68rfe-category-3-750hp-no-converter-copy","title":"68RFE Category 3 Transmission - 750HP","description":"\u003cp\u003eFeatures \u0026amp; Benefits\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e- Sonnax Smart-Tech® Overdrive Clutch Housing Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Washer Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Bearing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Complete Gasket and Sealing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Spin-on Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Pan Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Underdrive and Overdrive piston set\u003c\/li\u003e\n\u003cli\u003e- Upgraded 2C Clutch Set\u003c\/li\u003e\n\u003cli\u003e- 68RFE Billet 2C Piston\u003c\/li\u003e\n\u003cli\u003e- Suncoast Ducenti Valve body\u003c\/li\u003e\n\u003cli\u003e- Suncoast upgraded heavy duty sprag\u003c\/li\u003e\n\u003cli\u003e- Deep Mag Hytec pan\u003c\/li\u003e\n\u003cli\u003e- Suncoast Zero Cavitation filter kit\u003c\/li\u003e\n\u003cli\u003e- SunCoast OEM Solenoid Pack\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e- Billet input shaft\u003c\/li\u003e\n\u003cli\u003e- 750 Horsepower\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThe 68RFE\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 68RFE transmission is the big brother to the 45\/545RFE transmission. The RFE platform was originally designed by Chrysler and was introduced in 1999 with the debut of the new Jeep Grand Cherokee. \"RFE\" stands for Rear-wheel drive Fully Electronic control. The RFE design was mostly noted in the new design to have 3 planetary sets for a 4-speed transmission in the 45RFE.\u003c\/div\u003e\n\u003cp\u003eIn 2007, Chrysler debuted the new 6.7 Powerplant in the all new Dodge Ram, and Dodge wanted a transmission that was specifically designed for function. The previous platform utilized the Torqueflite 48RE platform and had been around since the late 50's when they released the first 727 in 1956 after purchasing the license from Simpson on the gearset in 1955.\u003c\/p\u003e\n\u003cdiv\u003eThe 46\/47\/48 Chrysler platforms were 3 and 4-speed units that were mechanically and hydraulically controlled, with the most notable control system being governor pressure.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe first improvement Chrysler wanted to make over the Torqueflite platform was, obviously, the amount of forward gear. For the 68RFE transmission, Chrysler opted to change to a six-speed unit. The additional gears allowed Chrysler to add higher 1st-gear ratios and tighter shift recovery from one gear to the next. The tighter shift recovery essentially keeps the vehicle in higher averaged horsepower and torque numbers, while also adding torque multiplication.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe gear ratios were increased. as well. The new 68RFE boasts a whopping 3.23:1 first gear, compared to the 2.45:1 first gear found in the previous 47\/48RE platform. Chrysler also increased second gear to a 1.83:1 versus the 1.45:1 found previously. The 68RFE was also given two overdrive gears, with 5th being .81:1 and 6th with the very deep .62:1. The predecessor had a single overdrive that was a .69:1.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Category Transmissions\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe SunCoast Category 68RFE transmissions are designed and developed with intentions of taking a systematic approach to solving the issues with the 68RFE transmission. We approach each deficiency and need from a scientific approach.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eWe aim to offer you the most complete series of 68RFE transmissions available on the market today.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eSonnax Smart-Tech® Overdrive Clutch Housing Kit\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eDodge trucks pulling heavy loads or boosted to 500–600HP are at high risk for overdrive burnup due to the stock transmission’s insufficient clutch capacity and fragile OE clutches.\u003c\/p\u003e\n\u003cp\u003eEven small amounts of heat and extra torque will push the thin (.034\"), single-sided clutches over the edge, distorting the clutch pack. The fact is, any distortion of the clutch pack takes the clearance out of spec and makes overdrive clutch burnup inevitable.\u003c\/p\u003e\n\u003cp\u003eKeep hardworking trucks on the road with the Sonnax Smart-Tech\u003csup\u003e®\u003c\/sup\u003e overdrive clutch housing kit 72960-18K. The unique billet aluminum housing increases OD apply area by 16% and holds a physically taller clutch pack. The 2X thicker steels increase clutch pack steel mass by 28% for maximum heat dissipation. The double sided BorgWarner clutch frictions are optimized for the 68RFE OD application and custom-made for the Sonnax kit. This guarantees an unrivaled combination of squawk resistance and maximum clutch capacity for any truck.\u003c\/p\u003e\n\u003cp\u003eThis groundbreaking kit is the only top-of-the-line upgrade that eliminates clutch problems without relying on valve body\/pump modifications or adding the expense of extra components.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModified housing holds physically taller clutch pack for 20% more clutch capacity\u003c\/li\u003e\n\u003cli\u003e16% More OD apply area for firmer, more controlled shifts\u003c\/li\u003e\n\u003cli\u003e2X Thicker steels and double-sided clutches increase steel mass by 28% for maximum heat dissipation\u003c\/li\u003e\n\u003cli\u003eCustom BorgWarner clutches for maximum capacity with state-of-the-art squawk resistance.\u003c\/li\u003e\n\u003cli\u003eBolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up\u003c\/li\u003e\n\u003cli\u003eCombine with Sonnax line pressure booster kit \u003ca href=\"..\/i-30502995-line-pressure-booster-kit.html\"\u003eRFE-LB1\u003c\/a\u003e for even higher levels of performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 2C Piston\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe factory molded piston is prone to uneven apply which leads to excessive heat in the clutches and steels creating premature failure. In this 68RFE transmission rebuild kit we replace the factory piston with a much improved billet piece that also allows for one additional clutch further increasing surface apply area.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThese new 68RFE transmissions are designed with the builder in mind, we offer from mild to wild depending on what your needs are.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Ducenti\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eSunCoast is proud to release its new Pro-Loc Ducenti 200psi Shift Calibration Kit for the 68RFE. What we present to you today is not just a haphazardly put together solution but the cumulation of many years of refinement. \u003cbr\u003e\u003cbr\u003eIn this valve body, we address several key issues within this hydraulic circuit using a multi-faceted approach. This kit includes everything you will need to achieve 200psi without any additional tuning and is designed to be a complete drop-in. \u003cbr\u003e\u003cbr\u003eFeatures and benefits of this shift calibration kit include a new pump half, TCC limit valve, TCC switch valve, five billet three-ring accumulator pistons, billet upgraded valve body plate, an upgraded heavy duty accumulator plate, and custom-calibrated spring rates for PR circuit.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Solenoid Pack\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eEvery new Suncoast transmission receives a new OEM solenoid back from Mopar.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eZero Cavitation Filter Kit\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe factory 68rfe has had many issues with pressure relief check valve system on the transmission pan filters. Initially Chrysler had issues with the plastic filter splitting in half. This was later remedied by adding a pressure relief valve on top of the filter. This later showed to be an issue as the valve would release itself from the filter all together.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis new bottom feeder filter kit allows the usage of a torqueflite filter. This filter conversion will not only prevent pump cavitation but will allow higher volume of fluid to be passed through the system. This will come with a specially machined Mag-Hytec pan.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SunCoast Transmissions","offers":[{"title":"2007.5-2018 \/ 2WD","offer_id":51038226251995,"sku":"SC-68RFE-3-07518-2WD-LCF","price":10390.45,"currency_code":"USD","in_stock":true},{"title":"2007.5-2018 \/ 4WD","offer_id":51038226284763,"sku":"SC-68RFE-3-07518-4WD-LCF","price":10390.45,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 2WD","offer_id":51038226317531,"sku":"SC-68RFE-3-19UP-2WD-LCF","price":10030.3,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 4WD","offer_id":51038226350299,"sku":"SC-68RFE-3-19UP-4WD-LCF","price":10030.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198648467.jpg?v=1786544412"},{"product_id":"68rfe-category-4-950hp-no-converter-copy","title":"68RFE Category 4 Transmission - 950HP","description":"\u003cp\u003e\u003cstrong\u003e68RFE CATEGORY 4 TRANSMISSION\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eKey Features of this SunCoast Custom Build include:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e- New Suncoast V2 billet drum\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Washer Kit\u003c\/li\u003e\n\u003cli\u003e- New 68RFE Thrust Bearing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Complete Gasket and Sealing Kit\u003c\/li\u003e\n\u003cli\u003e- 68RFE Spin-on Filter\u003c\/li\u003e\n\u003cli\u003e- 68RFE Underdrive and Overdrive piston set\u003c\/li\u003e\n\u003cli\u003e- Upgraded 2C Clutch Set\u003c\/li\u003e\n\u003cli\u003e- 68RFE Billet 2C Piston\u003c\/li\u003e\n\u003cli\u003e- Suncoast Ducenti Valve body\u003c\/li\u003e\n\u003cli\u003e- Suncoast upgraded heavy duty sprag\u003c\/li\u003e\n\u003cli\u003e- Deep Mag Hytec pan\u003c\/li\u003e\n\u003cli\u003e- Suncoast Zero Cavitation filter kit\u003c\/li\u003e\n\u003cli\u003e- SunCoast OEM Solenoid Pack\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e- Billet input shaft\u003c\/li\u003e\n\u003cli\u003e- Billet Input Clutch Hub\u003c\/li\u003e\n\u003cli\u003e- Billet Overdrive Clutch Hub\u003c\/li\u003e\n\u003cli\u003e- 950+ Horsepower\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eThe 68RFE\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eThe 68RFE transmission is the big brother to the 45\/545RFE transmission. The RFE platform was originally designed by Chrysler and was introduced in 1999 with the debut of the new Jeep Grand Cherokee. \"RFE\" stands for Rear-wheel drive Fully Electronic control. The RFE design was mostly noted in the new design to have 3 planetary sets for a 4-speed transmission in the 45RFE. \u003cbr\u003eIn 2007, Chrysler debuted the new 6.7 Powerplant in the all new Dodge Ram, and Dodge wanted a transmission that was specifically designed for function. The previous platform utilized the Torqueflite 48RE platform and had been around since the late 50's when they released the first 727 in 1956 after purchasing the license from Simpson on the gearset in 1955. \u003cbr\u003eThe 46\/47\/48 Chrysler platforms were 3 and 4-speed units that were mechanically and hydraulically controlled, with the most notable control system being governor pressure.\u003cbr\u003e\u003cbr\u003eThe first improvement Chrysler wanted to make over the Torqueflite platform was, obviously, the amount of forward gear. For the 68RFE transmission, Chrysler opted to change to a six-speed unit. The additional gears allowed Chrysler to add higher 1st-gear ratios and tighter shift recovery from one gear to the next. The tighter shift recovery essentially keeps the vehicle in higher averaged horsepower and torque numbers, while also adding torque multiplication.\u003cbr\u003e\u003cbr\u003eThe gear ratios were increased. as well. The new 68RFE boasts a whopping 3.23:1 first gear, compared to the 2.45:1 first gear found in the previous 47\/48RE platform. Chrysler also increased second gear to a 1.83:1 versus the 1.45:1 found previously. The 68RFE was also given two overdrive gears, with 5th being .81:1 and 6th with the very deep .62:1. The predecessor had a single overdrive that was a .69:1.\u003cbr\u003e\u003cbr\u003eThe Category Transmissions\u003cbr\u003e\u003cbr\u003eThe SunCoast Category 68RFE transmissions are designed and developed with intentions of taking a systematic approach to solving the issues with the 68RFE transmission. We approach each deficiency and need from a scientific approach.\u003cbr\u003e\u003cbr\u003eWe aim to offer you the most complete series of 68RFE transmissions available on the market today. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThe V2 Drum\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe SunCoast V2 68RFE Billet Drum is the most revolutionary thing that has happened to the 68RFE. There has been no other project here that we have invested as much research and development in. \u003cbr\u003eThis new drum has many features that have been improved upon versus previous versions of this particular drum. There is a 24% improvement in hydraulic clamping force over the factory drum and increased friction elements in overdrive, and all centrifugal apply springs were removed.\u003cbr\u003e\u003cbr\u003eOur SunCoast V2 billet drum was redesigned with a new lip seal style for the outer seal by increasing the diameter of the outer sealing surface. The quad-ring design of the inner drum o’ring maintains compression during high RPMs and has consistent factory-like CVIs. The drum’s wall thickness was also increased to improve drum rigidity and to reduce lateral movement in the overdrive apply plate.\u003cbr\u003eThis V2 billet drum is a completely assembled drop-in replacement for 68RFE vehicles.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThe 2C Piston\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eThe factory molded piston is prone to uneven apply which leads to excessive heat in the clutches and steels creating premature failure. In this 68RFE transmission rebuild kit we replace the factory piston with a much improved billet piece that also allows for one additional clutch further increasing surface apply area.\u003cbr\u003e\u003cbr\u003eThese new 68RFE transmissions are designed with the builder in mind, we offer from mild to wild depending on what your needs are.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThe Ducenti\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eSunCoast is proud to release its new Pro-Loc Ducenti 200psi Shift Calibration Kit for the 68RFE. What we present to you today is not just a haphazardly put together solution but the cumulation of many years of refinement.\u003c\/p\u003e\n\u003cp\u003eIn this valve body, we address several key issues within this hydraulic circuit using a multi-faceted approach. This kit includes everything you will need to achieve 200psi without any additional tuning and is designed to be a complete drop-in.\u003c\/p\u003e\n\u003cp\u003eFeatures and benefits of this shift calibration kit include a new pump half, TCC limit valve, TCC switch valve, five billet three-ring accumulator pistons, billet upgraded valve body plate, an upgraded heavy duty accumulator plate, and custom-calibrated spring rates for PR circuit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThe Solenoid Pack\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eEvery new Suncoast transmission receives a new OEM solenoid back from Mopar.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eZero Cavitation Filter Kit\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eThe factory 68rfe has had many issues with pressure relief check valve system on the transmission pan filters. Initially Chrysler had issues with the plastic filter splitting in half. This was later remedied by adding a pressure relief valve on top of the filter. This later showed to be an issue as the valve would release itself from the filter all together. \u003cbr\u003e\u003cbr\u003eThis new bottom feeder filter kit allows the usage of a torqueflite filter. This filter conversion will not only prevent pump cavitation but will allow higher volume of fluid to be passed through the system. This will come with a specially machined Mag-Hytec pan.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/HO7xLIiCktw\"\u003e\u003c\/iframe\u003e \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-gwa_lWXK7s\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"SunCoast Transmissions","offers":[{"title":"2007.5-2018 \/ 2WD","offer_id":51038352048347,"sku":"SC-68RFE-4-07518-2WD-LCF","price":11615.45,"currency_code":"USD","in_stock":true},{"title":"2007.5-2018 \/ 4WD","offer_id":51038352081115,"sku":"SC-68RFE-4-07518-4WD-LCF","price":11615.45,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 2WD","offer_id":51038352113883,"sku":"SC-68RFE-4-19UP-2WD-LCF","price":11319.0,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 4WD","offer_id":51038352146651,"sku":"SC-68RFE-4-19UP-4WD-LCF","price":11319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198648488.jpg?v=1786544414"},{"product_id":"68rfe-guardian-hd-series-no-converter-copy","title":"68RFE Guardian HD Series","description":"\u003cp\u003eFEATURES AND BENEFITS:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e- Billet Pro-Loc Ducenti Valve Body\u003c\/li\u003e\n\u003cli\u003e- Upgraded Zero-Cavitation Filter Kit\u003c\/li\u003e\n\u003cli\u003e- Upgraded Low\/Reverse Sprag\u003c\/li\u003e\n\u003cli\u003e- Increased Clutch Count in Overdrive\u003c\/li\u003e\n\u003cli\u003e- New Solenoid Pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe SunCoast Guardian Heavy Duty (XD) line of transmissions is designed around the stress and rigors demanded with heavy duty towing, hauling and work applications. Every aspect of the Guardian HD transmission line is strategically engineered and designed around functionality, reliability, and strength in the light, medium and heavy duty towing applications. This Guardian HD series of transmissions is built to perform in tough conditions, day in and day out, and is designed for use in heavy duty industrial, or commercial operations.\u003c\/p\u003e\n\u003cp\u003eSome of the key features that this new 68RFE Guardian line of heavy duty transmissions will feature are our billet Pro-Loc Ducenti valve body, upgraded zero-cavitation filter kit, and increased clutch count for overdrive.\u003c\/p\u003e\n\u003cp\u003eWhen what you're carrying matters, you can trust the Guardian HD to be there every mile along the way.\u003c\/p\u003e","brand":"SunCoast Transmissions","offers":[{"title":"2007.5-2018 \/ 2WD","offer_id":51038421024987,"sku":"68RFE-GUARDIAN-07518-2WD-LC","price":6595.0,"currency_code":"USD","in_stock":true},{"title":"2007.5-2018 \/ 4WD","offer_id":51038421057755,"sku":"68RFE-GUARDIAN-07518-4WD-LC","price":6595.0,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 2WD","offer_id":51038421090523,"sku":"68RFE-GUARDIAN-19UP-2WD-LC","price":6595.0,"currency_code":"USD","in_stock":true},{"title":"2019-Up \/ 4WD","offer_id":51038421123291,"sku":"68RFE-GUARDIAN-19UP-4WD-LC","price":6595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/4173\/0267\/files\/F198648336.jpg?v=1786544379"}],"url":"https:\/\/suncoastperformance.com\/collections\/68rfe-transmissions.oembed","provider":"SunCoast Diesel","version":"1.0","type":"link"}