Sonnax offers 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 1,500 horsepower, Sonnax Contender planetaries are an affordable choice for high-quality builds on a budget. 1.80 Ratio Contender planetary assembly kit 28180F-01 features premium-processed sun and pinion gears that are a big step up from standard case-hardened and tempered varieties. High-quality materials combined with a special heat-treating process results in incredibly tough, wear-resistant gears.

• High-quality sun and pinion gears deliver enhanced durability
• High-strength output shaft resists twisting and breakage
• Bolt-together carrier for ease of service

See chart and specs below to determine if this planetary assembly suits your application, ordial in options hereto choose your build.