Sonnax Smart-Tech® 10-clutch drum kit 28756-25K for GM Powerglides features a 35% larger piston that maximizes both engaging and holding capacity of the 10-clutch system. Smart-Tech components give you the option to reduce line pressure for greater efficiency, or drop to seven frictions for less parasitic drag and improved heat dissipation while retaining 10-clutch capacity.
35% More apply area
Use with your choice of frictions and steels
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