• 280mm LU (4L60-E) “VJCX”, 300mm (4L60-E), 4L60-E, 4L65-E, 4L75-E (300mm), Multi-Plate Performance Converter 300mm Performance Converter Kit GM-RK-405WC
  • 280mm LU (4L60-E) “VJCX”, 300mm (4L60-E), 4L60-E, 4L65-E, 4L75-E (300mm), Multi-Plate Performance Converter 300mm Performance Converter Kit GM-RK-405WC

Sonnax Performance Converter Kits

Engineered to Deliver Builds that Last

Designed from the ground up to outperform OE and other aftermarket components, Sonnax has you covered with a full line of performance converter kits for gas and diesel vehicles. Offering the widest variety of options in the aftermarket, these innovative kits deliver customized performance and value.

  • Small/Large Diameter
  • Single-Plate/Multi-Plate/Non-Lockup
  • Dampered/Damperless


Choose the right kit for your rebuild!