Action Clutch ACR-0660 Stage 3 Single-Disc Ceramic Clutch Kit (1MS) for Honda Civic Si K20Z3

The Action Clutch ACR-0660 Stage 3 (1MS) Clutch Kit is a high-performance single-disc clutch system engineered for the 2006–2011 Honda Civic Si equipped with the 2.0L K20Z3 engine and 6-speed manual transmission. Designed for drivers who demand more than the factory clutch can deliver, this kit delivers 170% increased holding capacity over the OEM unit while maintaining a drivable setup for aggressive street and occasional motorsport use.

Key Features:

• Heavy-Duty Single Diaphragm Pressure Plate – Reinforced drive straps provide superior clamping force and long-term durability over the stock pressure plate
• Sprung MIBA Ceramic Friction Disc – Available in 4-puck or 6-puck configurations; provides quicker, more aggressive engagement and excellent heat resistance compared to OEM organic material
• 170% Increased Holding Capacity – Engineered for heavy-duty street use and frequent drag, road course, and drift racing applications
• Patented Fully Enclosed Spring Retainers – Action Clutch's proprietary design prevents spring displacement under high-stress conditions, protecting the engine and transmission from damage
• Computer Spin Balanced – All components are balanced to within 0.25 oz-in for smooth operation across the full RPM range
• Quality Inspected – Every kit is reviewed and signed off by an experienced engineer before leaving the facility

What's Included:

• Single diaphragm heavy-duty pressure plate
• Sprung MIBA Ceramic clutch disc (4 or 6 puck)
• Release bearing kit

Break-In Requirements: A 500-mile street break-in period is required. During break-in, keep RPMs under 4,500, use no more than half throttle, and avoid boost if applicable. Proper break-in is necessary to retain warranty coverage and ensure full holding capacity. Some clutch chatter during initial break-in is normal and will diminish after the break-in period is complete.

The ACR-0660 is ideal for Civic Si owners running bolt-on modifications, aggressive cams, a tune, or those who regularly participate in autocross, track days, or spirited driving. Note that the ceramic disc delivers a firmer pedal and sharper engagement point compared to OEM — this is not a comfort-first clutch. Professional installation is recommended, as the procedure requires transmission removal and proper torque spec adherence.