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727 Performance Converter


Part No.


  • Racekit


727 Performance Converter


Part No. CH-RK-4

  • Turbine Hub
  • Impeller Hub
  • Thrust Washer
  • Front Cover bushing installed
  • Ring Gear 130-tooth

  • Turbine Hub Input Spline Count: 24
  • Unit Size: 10"
  • Core: GM 245mm
  • Dampered: No
  • Lock Up: No

Sonnax racekit CH-RK-4 for Chrysler 727 units includes all of the components required to build high performance converters utilizing GM 245 mm cores. CH-RK-4 features a one-piece forged front cover that provides high strength and easy assembly while the GM 245mm core allows builders to tailor the stall speed and torque multiplication rate to the individual customer.

  • One-piece forged and machined front cover
  • Both “offset” and 90º bolt patterns
  • 7/16”-20 mounting holes
  • Impeller and turbine hubs made from hardened Chromoly steel
  • Utilizes the GM 245mm core

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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