McLeod RST HD Twin Disc Clutch Kit with Steel Flywheel (6405807MD) - 2009-2026 GM LSX 8-Bolt Retrofit Applications
Equip your high-horsepower GM LSX retrofit build with the McLeod RST HD Twin Disc Clutch Kit. Designed for performance enthusiasts who demand serious holding power without giving up street-friendly operation, the RST HD bridges the gap between McLeod's popular RST and RXT clutch systems. Rated to handle up to 950 horsepower, this clutch delivers smooth engagement, manageable pedal effort, and track-ready capability for demanding street, drag racing, and road course applications.
The RST HD uses a unique hybrid twin-disc design with smooth-engaging organic friction material on one side of each disc and high-bite segmented ceramic material on the other. This combination provides increased torque capacity while helping minimize harsh engagement and excessive drivetrain stress. Paired with a durable billet steel flywheel, the system offers excellent heat capacity, consistent performance, and long-term durability for powerful LSX retrofit combinations.
Features
- Designed for 2009 and newer GM LSX retrofit applications with an 8-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
- Intended for retrofit applications only
Specifications
- Part Number: 6405807MD
- 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
- Clutch Usage: Performance
- Flywheel Included: Yes
- Flywheel Material: Billet Steel
- Engine Balance: Internal
- Ring Gear: 168 Tooth
- Crankshaft Bolt Pattern: 8-Bolt
- Hardware Included: Yes
- Alignment Tool Included: Yes
- Throwout Bearing Included: No
- Pilot Bushing Included: No
Fitment
- 2009 GM LSX 8-Bolt Crank Retrofit Application
- 2010 GM LSX 8-Bolt Crank Retrofit Application
- 2011 GM LSX 8-Bolt Crank Retrofit Application
- 2012 GM LSX 8-Bolt Crank Retrofit Application
- 2013 GM LSX 8-Bolt Crank Retrofit Application
- 2014 GM LSX 8-Bolt Crank Retrofit Application
- 2015 GM LSX 8-Bolt Crank Retrofit Application
- 2016 GM LSX 8-Bolt Crank Retrofit Application
- 2017 GM LSX 8-Bolt Crank Retrofit Application
- 2018 GM LSX 8-Bolt Crank Retrofit Application
- 2019 GM LSX 8-Bolt Crank Retrofit Application
- 2020 GM LSX 8-Bolt Crank Retrofit Application
- 2021 GM LSX 8-Bolt Crank Retrofit Application
- 2022 GM LSX 8-Bolt Crank Retrofit Application
- 2023 GM LSX 8-Bolt Crank Retrofit Application
- 2024 GM LSX 8-Bolt Crank Retrofit Application
- 2025 GM LSX 8-Bolt Crank Retrofit Application
- 2026 GM LSX 8-Bolt Crank Retrofit Application
Additional Notes
- For retrofit applications only.
- Designed for engines using an 8-bolt crankshaft, 168-tooth flywheel, and 1-1/8-inch, 26-spline transmission input shaft.
- 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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