Action Clutch ACR-3833 Stage 4 Single Disc Clutch Kit (1MD)

The Action Clutch ACR-3833 Stage 4 Single Disc Clutch Kit (1MD) is a race-engineered clutch system built for maximum performance in demanding track environments. Designed for drag, road course, and drift racing applications, this kit delivers aggressive engagement and significantly increased holding capacity over the factory clutch.

At the heart of this kit is an Unsprung MIBA Ceramic disc paired with a single diaphragm heavy-duty pressure plate featuring reinforced drive straps for added durability. The unsprung hub design is extremely lightweight, providing instant, direct engagement — ideal for performance and racing applications where response time matters.

Key Features:

• Stage 4 (1MD) single disc clutch system — engineered for track use
• 170% increased holding capacity over factory clutch kit
• MIBA Ceramic unsprung disc available in 4-puck or 6-puck configuration
• Single diaphragm heavy-duty pressure plate with reinforced drive straps
• Lightweight unsprung hub for instant, aggressive engagement
• Rapid heat dissipation for sustained high-performance use
• SFI 1.1 certified
• American-grade rivets and 100% dynamically spin balanced
• 4-stage, heat-treated diaphragm spring for consistent clamping force

What's Included:

• Stage 4 MIBA Ceramic unsprung clutch disc
• Single diaphragm HD pressure plate
• Release bearing
• Pilot bearing/bushing (when applicable)
• Clutch alignment tool
• Information sheet

Break-In Requirements: 500 street miles — keep RPMs under 4,500, no more than half throttle, no boost (if applicable). Proper break-in is required to retain the product warranty and ensure maximum longevity and holding capacity.

Important Note: This kit features an on-and-off engagement style and is recommended strictly for race use. Some clutch chatter is normal with this type of clutch kit and should diminish after proper break-in is completed. Not recommended for daily street driving.