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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. We also offer specialty parts for high performance torque converters.
More Popular Performance Applications
- Chrysler: 42RH/REA727, A904
- Ford: AOD, AODE, 4R70WC6E4OD, 4R100
- GM: 200-4R200, 200C350, 350C4L80-E, 400
The Best of the Best
Popular Kits for Transmission Upgrades:
Line Pressure Booster Kits Affordable kits for big performance without a big price tag.
Performance Packs The best parts for performance & heavy-duty recalibration.