68RFE Dodge trucks pulling heavy loads or with boosted power are at high risk for overdrive burnup due to the stock transmission’s insufficient clutch capacity and fragile OE clutches. Even 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.

Keep hardworking trucks on the road with the Sonnax Smart-Tech^® overdrive clutch housing kit 72960-17K and your choice of frictions and steels. The unique billet aluminum housing increases OD apply area by 16% and holds a physically taller clutch pack to optimize clutch capacity.

This 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. For an unrivaled combination of squawk resistance and maximum clutch capacity, Sonnax offers Smart-Tech kit 72960-18K that features a custom clutch pack.

• Modified housing holds physically taller clutch pack of your choice for up to 20% more clutch capacity
• 16% More OD apply area for firmer, more controlled shifts
• Bolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up
• Combine with Sonnax line pressure booster kit RFE-LB1 for even higher levels of performance