Action Clutch Stage 4 Clutch Kit (06-11 Civic Si) Action Clutch:Default Title 25mm oversized bearings feature advanced

25mm oversized bearings feature advanced metallurgy designed to withstand extreme loads and sustained RPM in turbocharged and naturally aspirated builds

SpeedFactory OBD2A to OBD1 ECU Jumper Harness for 96-98 Civic Enable seamless engine control unit compatibility with this specialized jumper harness

enabling optimal fuel injection timing and air-fuel ratio calibration

The durable red housing ensures visibility and easy identification in tight engine bays

Built to factory tolerances for consistent operation and extended engine life

Action Clutch Stage 4 Clutch Kit (06-11 Civic Si) Action Clutch:Default Title 25mm oversized bearings feature advancedAction 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