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King B-Series/K-Series Performance Main Bearings deliver precision engineering for high-performance Honda engines
quicker acceleration
timing adjustments
5mm Bore Pistons with 13
Action Clutch Stage 1 Clutch Kit (17+ Civic Si) Wiseco King B-Series/K-Series Performance Main BearingsAction 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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