Sonnax now offers this high-quality reverse clutch piston for the GM Powerglide. The piston is designed to utilize 4 frictions and 5 steels for transbrake applications or it can be machined to accept more frictions and steels. If you wish to reduce rotating weight in circle track applications, 2 frictions (rotating) and 7 steels (non-rotating) can be used.

• Made from 6061-T6 aluminum
• Machined to accept 4 frictions
• Includes inner and outer seals