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25mm oversized bearings feature advanced metallurgy designed to withstand extreme loads and sustained RPM in turbocharged and naturally aspirated builds
This precision-engineered differential minimizes wheel spin during acceleration and maintains optimal power distribution through turns
enabling optimal fuel injection timing and air-fuel ratio calibration
Built for reliability and precision fitment
installing a shifter into a K-swapped vehicle meant cutting a large section out of the chassis’ center tunnel to mount an OEM RSX shifter to a metal plate
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
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