Competition Clutch Stage 4 Ceramic Sprung Clutch for K20A/Z

Competition Clutch Stage 4 Ceramic Sprung Clutch – K20A / K20Z

If you're pushing your 2002–2006 Acura RSX or 2002–2011 Honda Civic Si hard, this Competition Clutch Stage 4 Ceramic Sprung Clutch is the “I’m done with stock” move.

Think serious power: turbo, supercharger, nitrous or a rowdy strip/street setup. This is a true Competition Clutch Stage 4 – the kind you bolt in when you’re done slipping through third and fourth. Engagement is firm and direct, but the sprung hub keeps it way more livable than an unsprung “on/off” disc.

The disc is a six-puck, torque-sprung setup with ceramic pads, so it grabs hard and survives heat. Competition Clutch rates it at roughly 250% over stock torque capacity, which is right where you want to be for a clutch on boost or spray. The pressure plate and disc step up from 230mm to 250mm, so you get more surface area, better bite, and more consistent holding power when you’re leaning on it in higher gears.

This 1620 Series Stage 4 Clutch Kit K20Z3 (SKU: COC-8037-1620) comes as a full package: performance pressure plate, six-puck ceramic sprung disc, throwout bearing (where applicable), pilot bearing or bushing (where applicable), and alignment tool. In other words, everything you actually need to swap in a Competition Clutch K20A2 or K20Z3 setup instead of mixing random parts.

Key Features

• Fits K20A and K20Z engines in 2002–2006 Acura RSX and 2002–2011 Honda Civic Si
• Six-puck torque-sprung ceramic disc: aggressive bite with more streetable manners than an unsprung puck
• Roughly 250% increase in torque capacity over stock for high-HP turbo, supercharger, or nitrous builds
• Larger 250mm pressure plate and disc (vs. 230mm OEM) for more grip and better heat management
• Includes throwout bearing, pilot bearing/bushing, and alignment tool
• Recommended ~300-mile street break-in for best life and most consistent engagement

Break-In Procedure

Once installed, treat this like any serious ceramic clutch: ease it in. For the first 300–500 miles, stay out of full-throttle launches and high-RPM clutch dumps. Shift frequently, use light to moderate throttle, and let the disc seat into the flywheel and pressure plate surfaces. That’s what gives you stable engagement and long life instead of hot spots and chatter. If you’re unsure about setup or break-in, reach out and we’ll walk you through what’s worked on our own K20 builds.