Core Selling Points of Clutch Cover Assembly (For K20 Race Engines)
1. Ultra-High Clamping Force, Locked Torque with Zero Slippage
Adopts thickened high-toughness diaphragm springs and forged cover body, delivering far stronger clamping force than upgraded street parts. It withstands instant peak torque from high-rev naturally aspirated setups and large turbochargers. No RPM slipping occurs during launch, full-throttle corner exit, or extreme high-rev operation.
The dual-plate race cover doubles clamping pressure, matching aggressive forged K20 power outputs ranging from 500 to 1000 horsepower.


2. High Temperature Resistance & Resistance to Heat Fade
Slotted cover body for heat dissipation and heat-resistant alloy construction. Diaphragm spring tension does not degrade rapidly after multiple laps of intense track driving, repeated launches, or burn-out starts with partial clutch engagement.
Resists warping and deformation under high heat, eliminating common street clutch flaws such as progressive slippage and softening clutch feel with prolonged use.
3. Lightweight Cover Body to Reduce Rotational Inertia
CNC-machined hollowed structure and forged lightweight housing drastically cut weight versus stock cast iron clutch covers.
Reduced combined rotating mass of flywheel and pressure plate enables faster high-RPM spool-up for the K20 engine, snappier RPM drop on downshifts, crisper shift response, and improved lap times.
4. Exceptional Flatness Precision & Dynamic Balance
Manufactured on race-grade precision lathes with minimal face flatness deviation for even pressure distribution across the surface.
Factory-calibrated high-speed dynamic balancing eliminates vibration at the 9000–10000 RPM redline, safeguarding the crankshaft, transmission input shaft, and bearings.
5. Rigid Diaphragm Springs Resist High-RPM Deformation
Standard street clutch diaphragms expand under high centrifugal force at elevated RPM, weakening clamping pressure.
Purpose-built race diaphragm springs use specially heat-treated spring steel with negligible deformation at high revs, sustaining consistent clamping force throughout the power band.
6. Sharp Disengagement & Crisp Gear Shifts
Short travel and rigid support structure deliver full instant disengagement when the clutch pedal is depressed, resulting in drag-free, smooth gear engagement.
Optimized for fast sequential upshifts/downshifts and heel-toe technique on track, cutting shift time significantly.
7. Wear & Impact Resistance with Heavy-Duty Durability
Rivet-reinforced diaphragm bases and thickened load-bearing fulcrums absorb shock from frequent hard launches and straight-line acceleration.
Boasts far longer service life under harsh track conditions than performance street clutches, lowering the risk of on-track breakdowns.
