Sonnax Performance Converter Kit

Performance Converter Kit
Part No. AL-RK-2A

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 performance converter 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.

Note

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.

Contents

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

Specs

Unit Size: 13.5"
Core: Allison 1000/2000/2400
Dampered: Yes
Lockup: Multi-Plate
Clutch Material: HTE
Transmission Unit: 1000/2000/2400, Early or 1000/2000/2400, 2006-Later
Turbine Hub Input Spline Count: 25

Related Tech

January 05, 2016

Torque Converter Journal: A Slippery Slope - The What (and Why) of Woven Carbon

Patent

7,770,704

Where to Buy

Existing Customers: Contact your sales representative.
New Customers: Fill out the form and a sales representative will contact you.

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.