Complete GM Powerglide planetary assemblies in a variety of gear set options and configurations to ensure you get the performance you want without overpaying or sacrificing quality. Each comes fully assembled and ready to install.
Track-proven to 3,000 HP, Sonnax Extreme planetaries are the finest quality Powerglide planetary assemblies in the world. From carrier and output shaft to gears and thrust washers, every component in 1.68 ratio Extreme planetary assembly kit s refined for maximum durability in the most demanding applications. 

Top-quality sun and pinion gears undergo additional advanced processing for unmatched durability
Extreme strength output shaft delivers unrivaled performance and reliability
24-Tooth billet drum flange designed to work exclusively with Sonnax clutch drums
Bolt-together carrier for ease of service

 

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