Spec Clutch SF422 Stage 2 Performance Clutch Kit

The Spec Clutch SF422 Stage 2 Clutch Kit is a high-performance upgrade engineered for mild to moderately modified naturally aspirated and power adder engines. It also performs exceptionally well at stock power levels where outstanding daily drivability and long service life are the priority.

Key Features:

• Pure Kevlar friction material — segmented or full-faced disc with steel backing delivers excellent drivability with higher torque capacity and longer life than Stage 1
• High-clamp pressure plate — engineered for increased clamping force over OEM units for superior power transfer
• High-torque sprung hub and disc assembly — double-sprung hub design with spring cover reliefs for flexibility and heat-treated components for strength and durability
• Bearing and alignment tool kit included — everything needed for a complete installation
• SFI approved — every SPEC clutch kit meets SFI certification standards
• Made in the U.S.A.

Intended Use: Street, Drag, Pulling, Autocross

The Stage 2 kit sits in SPEC's street-performance lineup between the Stage 1 and Stage 2+, offering a step up in torque capacity while retaining near-stock pedal feel and engagement characteristics. It is part of SPEC's full range of performance clutch stages, from street kits (Stage 1 through 3+) to race-only kits (Stage 4 and 5).

Installation Note: Unless using a new SPEC flywheel, the existing flywheel must be resurfaced prior to installation. A break-in period of at least 450 miles of primarily city/stop-and-go driving is required before full-throttle engagement or drag launching.