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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.