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 kits for Honda K, B, and D-series, Subaru WRX and STI EJ, Nissan 350Z, 370Z, 240SX, and 400Z, Mitsubishi EVO and DSM, Mazda Miata and RX-7, and sport compact applications are stocked at Black Ops Auto Works. Shop Stage 1 to Stage 5 clutch kits, twin disc clutches, lightweight flywheels, clutch discs, pressure plates, release bearings, and sport compact drivetrain parts for proven street, drag, road course, and high horsepower engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 197 Competition Clutch SKUs across the fitments and build levels enthusiasts actually use. What Competition Clutch Covers Competition Clutch offers staged clutch kits, twin and triple disc systems, lightweight flywheels, discs, pressure plates, release bearings, forks, and service components for sport compact, import, and selected domestic performance cars. Stage selection exp...
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Transmission and drivetrain hardware for manual and automatic platforms are stocked at Black Ops Auto Works. Shop flywheels, flexplates, transmission crossmembers, mounts, coolers, valve bodies, shifters, shifter bushings, release bearings, slave cylinders, U-joints, and transmission rebuild kits for Subaru WRX and STI, Dodge Cummins diesel, GM G-Body and F-Body, BMW B58 and S58, Nissan 350Z, and Toyota GR Corolla platforms. Every part is filterable by year, make, model, and transmission type so builders can confirm the correct fitment before ordering. Black Ops Auto Works carries 1,322 transmission and drivetrain SKUs. What This Category Covers This collection spans the hardware that connects the engine to the drivetrain and manages gear selection, including flywheels, flexplates, transmission crossmembers, bell housings, transmission mounts, pans, coolers, filters, valve bodies, transmission internals, shifters, shifter bushings and cables, release bearings, slave cylinders, U...
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