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C4, 10 or 11" Bolt Circle Dia. Performance Converter

10" Racekit

Part No.


10" Racekit
  • 10" Racekit


C4, 10 or 11" Bolt Circle Dia. Performance Converter

10" Racekit

Part No. FD-RK-3

  • Flanged Impeller Hub
  • Inner Stator Race
  • Turbine Hub 26-Tooth
  • Thrust Washer
  • Front Cover, Dual Bolt Pattern
  • Front Cover Bushing (Installed)
  • Set Screws (4)
  • Stud Covers (4)
  • Pilot

  • Turbine Hub Input Spline Count: 26
  • Stack Height: 5.938"
  • Bolt Circle Dia.: 10.500"
  • Bolt Circle Dia.: 11.400"
  • Unit Size: 10"
  • Core: GM 245mm
  • Dampered: No
  • Lock Up: No

Sonnax dual-bolt pattern 10" racekit FD-RK-3 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

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!

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