Competition Clutch Ultra-Light Flywheel (K20A2/A3/Z1/Z3)

Competition Clutch Ultra-Light Flywheel for K20A2, K20A3, K20Z1, and K20Z3 Engines

Turn every blip of throttle into forward motion. The Competition Clutch Ultra-Light Flywheel for K20A2, K20A3, K20Z1, and K20Z3 powerplants drops a full 8.8 lbs of rotating mass vs. the stock unit, letting your Civic Si or RSX snap to redline and back with race-car urgency.

Why it matters

• Faster revs, faster shifts – less inertia means crisper throttle response, quicker heel-toe blips, and reduced synchro wear during hard downshifts.
• Forged 4140 one-piece steel – ring gear and friction surface are machined from a single billet, eliminating the heat-related failures common to two-piece designs.
• Track-ready strength – SFI-approved construction shrugs off 10,000 rpm clutch dumps, supercharger torque spikes, and the repeated heat cycles of endurance events.
• Serviceable & streetable – can be resurfaced like OEM, accepts all OEM-diameter clutch kits from stock replacements to aggressive Stage-5 puck setups.
• Perfect fitment – bolts directly to 2002-2005 EP3 Civic Si, 2006-2011 FA/FG Civic Si, and 2002-2006 DC5 RSX (Base & Type-S) without spacers or shims.

Technical highlights

• Weight: 8.8 lbs (≈ 40% lighter than OEM)
• Material: CNC-machined 4140 forged steel, nitrided ring gear
• Friction surface: stepped for OE stack height, 230 mm disc diameter
• Balance: zero-balanced to <0.5 gram-inch
• Made in the USA by Competition Clutch and backed by a 90-day limited warranty.

Whether you’re chasing tenths on a time-attack lap, spooling a turbo faster, or simply giving your daily a sharper edge, this Competition Clutch Ultra-Light Flywheel (K20A2/A3/Z1/Z3) delivers the razor-sharp response enthusiasts crave—without sacrificing the durability demanded by real-world driving.

Installation Snapshot

Intermediate DIY, 3–4 hrs with trans removal; includes flywheel, alignment dowels, and new pilot bearing; reuse or replace OEM flywheel bolts; no tuning or machining required.