McLeod RST HD Twin Disc Clutch Kit with Steel Flywheel (6405507M) - 1997-2015 GM LS 6-Bolt Applications
Equip your high-horsepower GM LS build with the McLeod RST HD Twin Disc Clutch Kit, designed for enthusiasts who want serious torque capacity without sacrificing street-friendly drivability. Rated to handle up to 950 horsepower, the RST HD bridges the gap between McLeod's popular RST and RXT clutch systems, delivering smooth engagement, manageable pedal effort, and track-ready performance for demanding street, drag racing, and road course applications.
The RST HD uses a unique hybrid twin-disc configuration with smooth-engaging organic friction material on one side of each disc and high-bite segmented ceramic material on the other. This design increases torque-holding capability while helping reduce harsh engagement and unnecessary drivetrain stress. Paired with a durable billet steel flywheel, the kit provides excellent heat capacity, consistent performance, and long-term reliability for powerful LS combinations.
Features
- Designed for select 1997-2015 Chevrolet and Cadillac GM LS applications
- Fits engines equipped with a 6-bolt crankshaft
- Rated to support up to 950 horsepower
- Twin-disc design provides increased torque capacity and improved heat management
- Hybrid organic and segmented ceramic friction materials
- Smooth, street-friendly engagement with strong holding power
- Solid hub clutch disc design
- Diaphragm-style pressure plate provides manageable pedal effort
- Includes a durable billet steel flywheel
- 168-tooth ring gear with internal engine balance
- Designed for a 1-1/8-inch, 26-spline transmission input shaft
- Includes installation hardware and alignment tool
Specifications
- Part Number: 6405507M
- Horsepower Rating: 950 HP
- Disc Diameter: 9.688 inches
- Input Shaft Diameter: 1.125 inches
- Input Spline Quantity: 26
- Disc Material: Organic / Ceramic
- Disc Style: Full Face / Segmented
- Hub Style: Solid
- Pressure Plate Style: Diaphragm
- Flywheel Included: Yes
- Flywheel Material: Billet Steel
- Engine Balance: Internal
- Ring Gear: 168 Tooth
- Crankshaft Bolt Pattern: 6-Bolt
- Hardware Included: Yes
- Alignment Tool Included: Yes
- Throwout Bearing Included: No
- Pilot Bushing Included: No
Fitment
- 1997 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 1998 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 1999 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2000 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2001 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2002 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2003 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2004 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2005 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2006 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2007 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2008 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2009 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2010 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2011 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2012 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2013 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2014 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 2015 Chevrolet GM LS Application with 6-Bolt Crankshaft
- 1997-2015 Cadillac GM LS Applications with 6-Bolt Crankshaft
Additional Notes
- Designed for applications using a 6-bolt crankshaft, 168-tooth flywheel, and 1-1/8-inch, 26-spline transmission input shaft.
- 2004-2007 Cadillac CTS-V applications require McLeod slave cylinder spacer Part Number 1377-950, sold separately.
- Includes billet steel flywheel, installation hardware, and alignment tool.
- Throwout bearing and pilot bushing are not included and must be purchased separately if required.
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