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high compression and/or utilizing aftermarket competition cams
Honda K20A2/K20Z1/K20Z3 Intake Valve Spring 14761-PRB-A02 OEM-equivalent intake valve spring engineered for Honda K-series engines
The durable red housing ensures visibility and easy identification in tight engine bays
they ensure reliable operation under demanding racing conditions
Direct replacement for stock applications
Action Clutch Stage 5 Clutch for 06-11 Civic Si Action Clutch:Default Title high compression and/or utilizing aftermarketAction Clutch's lightweight flywheel engineered to deliver measurable performance gains through reduced rotational mass. The aluminum construction cuts weight enabling faster engine response, quicker acceleration, and improved throttle modulation. This upgrade minimizes drivetrain inertia for sharper shifts and enhanced rev matching capability. Ideal for drivers seeking responsive handling without sacrificing reliability or drivability in daily
