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A618, 47RH/RE, 48RE (310mm) Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE)

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

View Instructions

When 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 BW-RK-2A improves holding capacity in the BorgWarner 310mm converter 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.
  • Turbine Hub
  • Radial Lip Seal
  • Thrust Washer
  • Front Cover Assembly with Bushing Installed
  • Complete Damper Assembly
  • Energizer Ring
  • Seal PTFE
  • Clutch Plate with External Splines
  • Clutch Plate with Internal Splines
  • Core: BorgWarner 310mm
  • Dampered: Yes
  • Lockup: Multi-Plate
  • Unit Size: 13.5"
  • Clutch Material: HTE
  • Turbine Hub Input Spline Count: 23
  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.

  • Bw rk 2a

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!