Action Clutch ACR-3846 Stage 3 Single-Disc Clutch Kit 1MS Metallic Sprung

The Action Clutch ACR-3846 Stage 3 (1MS) Single-Disc Clutch Kit is a heavy-duty performance clutch system engineered for high-output street vehicles that see regular hard driving and occasional competition use. The "1MS" designation stands for Single Diaphragm, Metallic Sprung — delivering 170% increased torque holding capacity over the factory clutch.

Key Features:

• MIBA Sprung Ceramic Disc (4 or 6 Puck): High-performance ceramic friction material provides superior heat dissipation, aggressive engagement, and exceptional holding capacity compared to organic or Kevlar alternatives
• Single Diaphragm Heavy-Duty Pressure Plate: Reinforced drive straps maintain consistent clamping load across the RPM range for reliable power transfer
• Sprung Hub Design: Encapsulated (non-exposed) disc springs absorb driveline shock for improved streetability versus a rigid solid-hub disc
• 170% Increased Crank Torque Holding Capacity over the OEM clutch
• SFI Spec 1.1 Certified components for peace of mind in performance and competition applications
• Compatible with stock and quality aftermarket flywheels
• Computer spin-balanced to within 0.25 oz-in for smooth, vibration-free operation

What's Included:

• Sprung MIBA Ceramic Clutch Disc (4 or 6 Puck)
• Single Diaphragm HD Pressure Plate
• Conventional Release Bearing
• Pilot Bearing / Bushing (where applicable)
• Clutch Alignment Tool

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

Important Notes: Some clutch chatter and increased gear rattle is normal with ceramic-disc clutch kits and will minimize after proper break-in. Holding capacity ratings are measured at the crankshaft, not the wheels. Ceramic-based clutch discs are designed to increase holding capacity and durability, not necessarily extend disc life expectancy.