Spec Clutch SD842 Stage 2 Kevlar Clutch Kit

The Spec Clutch SD842 Stage 2 Clutch Kit is an ideal performance upgrade for mild to moderately modified naturally aspirated and power-adder engines. Engineered to handle up to 400 ft-lbs of torque, the Stage 2 kit delivers the street-friendly drivability of a Stage 1 clutch while offering increased torque capacity and improved longevity — making it equally well-suited for stock power levels and spirited everyday driving.

Key Features:

• Pure Kevlar friction disc with steel backing — available in segmented or full-faced configuration for optimized grip and smooth engagement
• High-clamp performance pressure plate for enhanced clamping force and improved torque transfer
• Double-sprung hub with spring cover reliefs for flexibility, plus heat-treated components for long-term strength and durability
• High-torque sprung hub and disc assembly engineered for consistent performance under demanding conditions
• Includes OE cast steel flywheel, release bearing, and alignment tool kit for complete installation readiness
• 17-spline input shaft compatibility with 0.938 in. input shaft diameter

Intended Use: Street, drag racing, autocross, and pulling applications.

The Spec SD842 Stage 2 kit represents a significant step up from OEM clutch components without sacrificing the daily-driver refinement expected on the street. Whether pushing through a spirited canyon run or launching hard at the strip, this kit provides the balance of engagement feel and durability that performance drivers demand.