McLeod 6405807MD RST HD Street Twin Disc Clutch Kit - Modular 8-Bolt LS/LT Crate Engines

The McLeod 6405807MD RST HD Street Twin Disc Clutch Kit is engineered for the high-horsepower street enthusiast who needs more holding power than the standard RST while retaining excellent street drivability. Positioned between McLeod's RST and RXT twin-disc systems, the RST HD delivers an ideal balance of performance and everyday usability for spirited street driving and weekend track use.

This Modular Twin configuration ("MD" suffix) is designed for GM LSA, LSX, and LT-series 8-bolt crank engines and is rated for up to 800+ horsepower. The hybrid friction material pairing combines a full-face organic disc for smooth, predictable engagement with a segmented ceramic disc that adds increased bite and superior torque capacity under aggressive driving conditions.

Key Features:

• RST HD twin-disc design — positioned between the RST and RXT in McLeod's performance clutch lineup
• Hybrid organic/ceramic friction disc combination for smooth engagement and high torque capacity
• Sprung hub disc design for improved NVH and drivability
• Diaphragm-style pressure plate for consistent clamping force
• Billet steel flywheel included — 168-tooth ring gear, 8-bolt crank flange
• Input shaft: 1-1/8 in. diameter x 26-spline
• Disc diameter: 9.688 in. (246 mm)
• RST/RXT Steel Adapter Plate clutch pattern
• CNC-machined and anodized flywheel adapter ring
• Blanchard-ground floater plate with multiple straps to reduce noise
• Alignment tool included
• Lighter-than-stock pedal feel

Kit Includes: Diaphragm pressure plate, two friction discs (organic/ceramic hybrid), Blanchard-ground floater plate, billet steel flywheel, adapter ring set, installation hardware, and alignment tool.

Important: This is a Retrofit Application Only. A proper break-in period of 500–750 miles of stop-and-go city driving is required before wide-open-throttle use to properly seat the discs against the pressure plate and flywheel.