McLeod RST HD Twin Disc Clutch Kit with Steel Flywheel (6405907MD) - 2009+ GM LSX 9-Bolt Retrofit Applications
Take your high-horsepower GM LSX retrofit build to the next level with the McLeod RST HD Twin Disc Clutch Kit. Designed for enthusiasts who demand exceptional street manners with uncompromising track capability, the RST HD bridges the gap between McLeod's renowned RST and RXT clutch systems. Rated to handle up to 950 horsepower, this twin-disc clutch delivers outstanding torque capacity, smooth engagement, and reliable performance for street, drag racing, and road course applications.
The RST HD features McLeod's advanced hybrid twin-disc design, pairing smooth-engaging organic friction material on one side of each disc with high-bite segmented ceramic material on the other. This innovative combination provides increased torque-holding capability while maintaining light pedal effort and minimizing drivetrain shock during aggressive driving. Combined with a durable billet steel flywheel, this clutch system offers excellent heat resistance, long-term durability, and consistent performance for demanding high-horsepower LSX builds.
Features
- Designed for 2009 and newer GM LSX retrofit applications with a 9-bolt crankshaft
- Rated to support up to 950 horsepower
- Twin-disc clutch design for increased torque capacity and superior heat management
- Hybrid organic and segmented ceramic friction discs
- Smooth engagement with excellent street drivability
- Ideal for high-performance street and track applications
- Diaphragm-style pressure plate provides light pedal effort
- Includes durable billet steel flywheel
- 168-tooth flywheel with internal engine balance
- Designed for 1-1/8-inch, 26-spline transmission input shafts
- Includes installation hardware and alignment tool
- Intended for retrofit applications only
Specifications
- Part Number: 6405907MD
- 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 Tooth Quantity: 168
- Crankshaft to Flywheel Bolt Quantity: 9
- Hardware Included: Yes
- Alignment Tool Included: Yes
- Throwout Bearing Included: No
- Pilot Bushing Included: No
Fitment
- 2009 GM LSX 9-Bolt Crank Retrofit Application
- 2010 GM LSX 9-Bolt Crank Retrofit Application
- 2011 GM LSX 9-Bolt Crank Retrofit Application
- 2012 GM LSX 9-Bolt Crank Retrofit Application
- 2013 GM LSX 9-Bolt Crank Retrofit Application
- 2014 GM LSX 9-Bolt Crank Retrofit Application
- 2015 GM LSX 9-Bolt Crank Retrofit Application
- 2016 GM LSX 9-Bolt Crank Retrofit Application
- 2017 GM LSX 9-Bolt Crank Retrofit Application
- 2018 GM LSX 9-Bolt Crank Retrofit Application
- 2019 GM LSX 9-Bolt Crank Retrofit Application
- 2020 GM LSX 9-Bolt Crank Retrofit Application
- 2021 GM LSX 9-Bolt Crank Retrofit Application
- 2022 GM LSX 9-Bolt Crank Retrofit Application
- 2023 GM LSX 9-Bolt Crank Retrofit Application
- 2024 GM LSX 9-Bolt Crank Retrofit Application
- 2025 GM LSX 9-Bolt Crank Retrofit Application
- 2026 GM LSX 9-Bolt Crank Retrofit Application
Additional Notes
- For retrofit applications only.
- Designed for engines equipped with a 9-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.
- Ideal for high-horsepower street and track builds requiring exceptional torque capacity, smooth engagement, and long-lasting durability.
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