The 10-clutch system increases lockup surface in GM Powerglides for significantly more torque capacity than modified OE drums. The drum kit includes 10 .060" frictions and 10 .060" thick, 12-lug steels, increasing lockup surface to allow significantly more torque than modified OE drums. 10-clutch drum kit 28756-01K is a complete drum kit that includes all high-clutch-related components, including a pre-installed, PTFE-coated bushing. * Patented drum, hub and piston system improves clutch capacity for maximum durability* High-strength drum with reduced rotating mass improves on-track acceleration* 6061 Forged piston will not crack like cast pistons* Forged chromoly clutch hub guarantees your power makes it to the wheels

Sonnax 28756-01K Includes:

• 10-Clutch Piston
• High Clutch Return Springs 24
• Clutch Drum Spring Retainer
• Lip Seal Large
• Lip Seal Small
• Frictions 10 .060"
• Kolene Steels 10 12-Tooth
• Bushing PTFE-Coated
• 10-Clutch Hub With Lightening Holes
• Retaining Ring Large
• Retaining Ring Small
• Wear Plate Large
• Wear Plate Small
• Shim
• 10-Clutch Drum