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Faster tougher stronger

Heavy Duty & High Performance Upgrades

Sonnax high performance transmission products meet the toughest challenges faced by hard-working, daily-use transmissions as well as racing units going all-out on the street or track. Products range from innovative upgrades designed to fix everyday problems rebuilders see in their shops to an extensive line of Powerglide components.

Sonnax Smart-Tech®

Regardless of the transmission, Sonnax Smart-Tech products are the best of the best. Through a fusion of top-notch expertise, innovative engineering, technical mastery and precision manufacturing, these groundbreaking parts overcome OE limitations to deliver the ultimate in transmission performance.

Learn more about Sonnax Smart-Tech

Sonnax Performance Goes Beyond the Transmission

Browse our ever-expanding line of race kits, slip yokes and driveshaft components.

All HP Parts