47RE, 48RE Smart Tech Billet Input Shaft/ Hub Assembly
Based on the ultra-durable, one-piece Sonnax heavy duty input shaft 22121B-01 for Chrysler 47RE, 47RH, and 48RE units, the Smart-Tech input shaft and piston kit 22121B-02K has a hub with longer direct (front) clutch splines. Combining longer splines with a thinner billet aluminum direct piston allows for one extra (OE-thickness) direct friction plate, while keeping OE-thickness steels, backing plate, OE waved retaining ring and OE clutch clearances.
Some common aftermarket modifications designed to include extra clutches require reduced steel thickness and decrease the heat absorption capacity of the clutch pack, others reduce clearance and eliminate the waved retaining ring, which contributes to excessive 2-3 shift overlap. The Sonnax kit avoids these problems by increasing the number of frictions from five to six, adding to the steel mass of the clutch pack, and maintaining the OE thickness backing plate and clearances for the optimum combination of increased capacity and durability.
- Kit increases direct clutch capacity by 20%
- Custom forged from ultra-high strength 300M billet steel
- One-piece design eliminates weak connection between input shaft and forward clutch hub
- No change to backing plate thickness or retaining ring
- Contents
- Steel Clutch Plate .068" with Missing Lugs
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- Direct Clutch Piston with Anti-Rotation Tabs
- Input Shaft with Extended Hub
MTS diesel recommends using our Billet input shaft/hub assembly for any truck over 500 hp. This is used in conjunction with a triple disc converter to insure no damage occurs to triple disc converter or transmission
Billet Shafts are designed to handle increased horsepower and torque! Stock Shafts are known to break or twist which cause catastrophic transmission failure
MTS Billet shafts are available individually or in any transmission package. Contact MTS to learn more about billet input, intermediate and output shafts- and how they can make your transmission more reliable.