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Smart-Tech® 10-Clutch Drum Kit

Smart-Tech® 10-Clutch Drum Kit

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Availability: In stock


Quick Overview



Smart-Tech 10-Clutch Drum
Smart-Tech 10-Clutch Piston
10-Clutch Hub
Thrust Bearing
Bushing PTFE Coated, Installed
High Clutch Return Springs (24)
Clutch Drum Spring Retainer
Retaining Ring Small
Inner & Outer Lip Seals Not Shown
Shim Narrow
Shim Wide
Smart-Tech 10-clutch drum kit 28756-25K features Sonnax's oversized piston with 35% more apply area than OE drums or Sonnax regular 10-clutch drum kits. The 35% larger piston increases both the engaging capacity and holding capacity of the 10-clutch system. Alternatively, it is possible to reduce line pressure or to use just seven frictions and have the same holding capacity as a regular 10-clutch drum, but with increased heat dissipation from thicker steels.

Sonnax 10-clutch drum kits are optimized for Powerglide performance applications. Using the patented Sonnax 10-clutch drum system, the drum and piston accept 10 frictions and 10 Kolene® steels, increasing lockup surface to allow significantly more torque than modified OE drums. The drum features a piston bore that is .060" deeper for greater piston travel than was available from Sonnax 10-clutch drum kit 28755-08K (discontinued).

35% More apply area
Use with your choice of frictions and steels
Excess material removed from high-strength, cast steel drum to reduce rotating mass
6061 Forged aluminum piston will not crack at high operating pressure like cast pistons
Forged chromoly steel clutch hub

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