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350, 400, 8" Performance Converter

8" Racekit
Part No. GM-RK-2

View Instructions

Sonnax dual-bolt pattern 8" racekit GM-RK-2 allows builders to assemble a high performance converter with minimal effort.

  • Fully machined cover with bushing installed
  • Unit-specific design for hassle-free installation
  • Oil flow grooves and holes increase fluid flow to keep converters running cooler
  • Turbine hub features a larger flanged diameter to increase the strength rigidity of the turbine
  • Clear, detailed instructions

Pilot kit NOT included

  • Flanged Impeller Hub
  • Thrust Washer
  • Adapter Ring
  • 30-Tooth Turbine Hub
  • Front Cover Bushing (Installed)
  • Front Cover, Dual Bolt Pattern
  • Core: Opel
  • Unit Size: 8"
  • Dampered: No
  • Lockup: No
  • Turbine Hub Input Spline Count: 30
  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • Gm rk 2

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

Learn more about Sonnax performance converter kits!