Spec Clutch SF142 Stage 2 Kevlar Clutch Kit

The Spec Clutch SF142 Stage 2 Clutch Kit delivers the ideal combination of performance holding power and street-friendly drivability. Engineered for mild to moderately modified naturally aspirated and power-adder engines, this kit also performs exceptionally well at stock power levels where long service life and smooth daily driving are priorities.

The Stage 2 features a full-face pure Kevlar® disc with steel backing — a step up from the Stage 1 — providing slightly longer service life and higher torque capacity while retaining the stock-like pedal feel and engagement characteristics drivers expect on the street. The high-clamp pressure plate works in tandem with a high-torque, double-sprung hub and disc assembly featuring spring cover reliefs for added flexibility and heat-treated components for long-term strength and durability.

Key Features:

• Full-face Kevlar® friction disc with steel backing for excellent drivability and extended wear life
• High-clamp pressure plate for increased torque capacity
• High-torque double-sprung hub with spring cover reliefs for smooth engagement
• Heat-treated internal components for strength and durability
• Average torque capacity: 520 ft-lbs
• 10-spline input shaft compatibility
• 11-inch disc diameter
• Includes pressure plate, clutch disc, release bearing, and alignment tool
• Flywheel not included
• Proudly designed, hand-built, and tested in the U.S.A.

Intended Use: Street, Drag Racing, Pulling, Autocross

The SF142 is a complete bolt-in performance upgrade over a worn OEM clutch, offering a significant torque capacity increase without the harsh on/off engagement feel of race-only clutches. Professional installation is recommended.