Action Clutch ACR-3643 Stage 2 Super Copper Transmission Clutch Kit

The Action Clutch ACR-3643 Stage 2 Super Copper Clutch Kit is engineered for street and track use, delivering a meaningful performance upgrade over OEM without sacrificing daily drivability. Built around a reinforced steel-backed, copper-loaded organic clutch disc — featuring the highest copper content available in any organic clutch on the market — this kit offers superior grip, improved heat tolerance, and more consistent performance under demanding conditions. It pairs that disc with a heavy-duty single diaphragm pressure plate for smooth, predictable engagement whether you're commuting or pushing the car on a circuit. The 225 mm disc (ACR-KS-225) features a 15/16 in. spline diameter and 17-tooth spline count, and the pressure plate carries model number 05-085.

Key Features:

• Stage 2 Super Copper organic disc — highest copper content in its class for better grip and heat resistance than OEM
• Reinforced steel-backed clutch disc facing for increased power holding capacity
• Heavy-duty single diaphragm pressure plate for smooth street engagement and track-ready clamping force
• Patented fully enclosed spring retainer system — protects against spring failures that can cause transmission or engine damage
• Sprung hub disc design for smooth, street-friendly clutch feel
• 225 mm clutch disc diameter | 15/16 in. spline diameter | 17 spline count
• Hand-assembled and individually quality-checked by Action Clutch's senior engineering team (50+ years combined experience)
• Suited for stock, mildly tuned street cars, and basic bolt-on builds seeking more performance without giving up drivability
• Ideal applications: street/track, occasional circuit use, time attack, and road racing

The ACR-3643 is the ideal upgrade for drivers who want real, tested performance and long-term reliability. Every unit is inspected multiple times before it leaves the facility, ensuring you receive a kit that meets strict quality standards — not just spec-sheet promises. Fits select 1995–1999 Mitsubishi models. Note: this kit does not include a flywheel; the flywheel style is listed as modular and should be sourced separately to complete your clutch system service.