sonnax-black Facebook-color LinkedIn-color maillink printlink r_and_r_only SERVOFIX-logo-web Twitter-color VBFIX-logo-web video-logo-web warranty_only Youtube-color

4L60 Performance Converter

10" Racekit
Part No. GM-RK-9

Converts GM 200-4R, 4L60 & E, 298mm lockup converters with mounting ring to a high performance, non-lockup converter.

View Instructions

Sonnax 10" racekit GM-RK-9 for GM 200-4R, 4L60 & E, 298mm LU applications allows builders to assemble a high performance, non-lockup converter with minimal effort. With the readily available GM 245mm converter cores, a variety of stall speeds can be built using different stator and impeller combinations.

  • Fully machined cover with bushing installed
  • Impeller hub and turbine hub made from 4130 Chromoly steel
  • Oil flow grooves and holes increase fluid flow to keep converters running cooler
  • Turbine hub has a larger flanged diameter to increase the strength and rigidity of the turbine assembly
  • Mounting Pad Spacers (3)
  • Thrust Washer
  • Flanged Impeller Hub
  • 27-Tooth Turbine Hub
  • Pilot Kit
  • Front Cover Bushing (Installed)
  • Front Cover, Dual Bolt Pattern
  • Unit Size: 10"
  • Core: GM 245mm
  • Dampered: No
  • Lockup: No
  • Turbine Hub Input Spline Count: 27
  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • Gm rk 9

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!