Sonnax offers complete GM Powerglide planetary gear sets in a variety of gear set options and configurations to ensure you get the performance you want without overpaying or sacrificing quality.

Track-proven to 3,000 HP, Sonnax Extreme gears build the finest quality Powerglide planetaries in the world, when every component has to be refined for maximum durability in the most demanding applications. 1.58 Ratio Extreme gear set 158S3-24K features Sonnax premium sun and pinion gears that also undergo the same advanced processing used in Formula 1^™, NASCAR^® and other high-end professional racing circuits.

• Top-quality sun and pinion gears undergo additional advanced processing for unmatched durability
• Ring gear is pre-drilled for the Sonnax stabilizer system, 28510-S2, to prevent vibration and broken reverse friction plates
• 24-Tooth billet drum flange is broached and matched to the sun gear for a precise press fit, no welding required
• Flange is designed to work exclusively with Sonnax clutch drums