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1000/2000/2400, 2006-Later, 1000/2000/2400, 2006-Later Performance Converter, 1000/2000/2400, Early, 1000/2000/2400, Early Performance Converter

Multi-Plate Clutch Kit
Part No. AL-RK-2A

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When full-size GM diesel trucks are modified for either racing or street use, OE clutch plates slip and just do not hold. Limited damper capacity further cripples performance. Upgrading to an aftermarket multi-plate converter is the only solution.

Sonnax multi-plate clutch kit AL-RK-2A improves holding capacity in Allison 1000/2000/2400 converters without sacrificing stock shift action. Clear instructions, minimal setup and easy assembly make these foolproof upgrades. All-new kit components eliminate the rework and limitations associated with salvaged parts.

Enhanced design features include:

  • Fully-machined, forged piston and custom damper rivets won’t bend under extreme lockup pressure.
  • Piston is tested and proven to withstand bending up to 400 psi.
  • Spring end caps limit how far springs compress under load to prevent breakage.
  • Increased oil flow improves cooling and lubrication of clutch plates.
  • Patented piston/damper assembly absorbs up to 1,250 ft-lbs. of torque.
  • Three solid, non-segmented, high-thermal, high-torque capacity friction elements.

Additional parts are required for installation of AL-RK-2A in 2006-later units:

  • For 2006 and 2007 units, the OE stator cap must be replaced with AL-WA-3.
  • For 2008-later units, measure the combined height of the OE stator cap and bearing race.
  • Units with a combined height of .482” will require replacing the OE stator cap and bearing with AL-WA-3 and AL-N-2.
  • Units with a combined height of .513” will require replacing the OE stator cap and bearing with AL-WA-4 and AL-N-2.
  • Turbine Hub
  • Turbine Hub Rivets (12)
  • Clutch Plate with Internal Splines
  • Clutch Plate with External Splines
  • Thrust Washer
  • Front Cover
  • Complete Damper Assembly
  • Energizer Ring
  • Seal PTFE
  • Unit Size: 13.5"
  • Core: Allison 1000/2000/2400
  • Dampered: Yes
  • Lockup: Yes
  • Turbine Hub Input Spline Count: 25

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  • Al rk 2a combo

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!