SKU: P2-800-STU | UPC: 887753963314
Competition Clutch 02-06 Acura RSX 02-11 Honda Civic Si 11lb Steel Flywheel
Engineered for high-performance demands this Competition Clutch STU series 11lb steel flywheel suits 2002-2006 Acura RSX models and 2002-2011 Honda Civic Si. It reduces rotational mass for faster engine response and revving perfect for boosted setups and track use. Pair it with Stage 3 or higher clutches for reliable power transfer in racing conditions.
Key Features
- 11lb Ultra Lightweight Design: Removes excess material to enable quicker throttle response and higher RPM shifts ideal for drag strip and circuit driving
- 4140 Forged Steel Construction: One-piece billet design withstands extreme heat and stress from turbo or supercharger applications
- SFI Certified: Meets safety standards for sanctioned racing ensuring durability during prolonged high-RPM operation
- Precise Ring Gear Machining: 153-tooth steel ring gear provides smooth engagement with OEM or aftermarket clutches
- Track and Rally Proven: Built for forced induction and competitive motorsports with reduced inertia for consistent performance
Product Notes
- Inspect clutch and pilot bearing during installation for compatibility
- Avoid daily driver use with stock clutches due to lightweight design
- Ships in protective foam packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Requires K-series compatible pressure plate and alignment tool
- Uses OEM starter motor and flywheel bolts torque to 87 ft-lbs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2006 | Acura | RSX | Base |
| 2002-2006 | Acura | RSX | Type-S |
| 2002-2005 | Honda | Civic | Si |
| 2006-2011 | Honda | Civic | Si |
| 2008 | Honda | Civic | MUGEN Si |
Why Choose Competition Clutch?
- Over 25 years leading the motorsports clutch market
- Engineered and tested in USA for K-series reliability
- SFI certification backs every flywheel for racing safety
Frequently Asked Questions
-
Q: Does this fit 2006-2011 Honda Civic Si with K20Z3 engine?
A: Yes it bolts directly to K20A2 K20A3 and K20Z3 crankshafts used in 2002-2011 Civic Si models -
Q: What material is the flywheel made from?
A: Precision machined from 4140 forged steel for heat resistance and strength in high-horsepower builds -
Q: Is professional installation required?
A: Recommended due to engine removal and precise torque specs contact a shop familiar with K-series swaps
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: 14 x 14 x 6 inches protective box
- Weight: 11 lbs product 15 lbs shipped
Competition Clutch
Competition Clutch is a leading manufacturer of performance clutch systems for sport compact, import, and domestic applications. Trusted by Honda, Subaru, Mitsubishi, and Volkswagen platform builders, Competition Clutch kits offer clearly defined stage ratings from street-friendly organic setups to full race six-puck ceramic systems for maximum torque capacity.Popular UpgradesStage 2 and Stage 3 clutch kits for popular platforms including the Honda Civic, Acura RSX, Subaru WRX and STI, Mitsubishi Evo, and Volkswagen GTI are the most frequently purchased Competition Clutch products. Stage 4 and six-puck clutch kits are the preferred setup for turbocharged builds pushing 400 horsepower and above. Lightweight single-mass flywheels from Competition Clutch are a popular addition to any stage upgrade for better rev response and faster clutch pedal action.What stage Competition Clutch kit do I need?Stage 1 and Stage 2 kits use organic friction materials suited for street driving with mild ...
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