Action Clutch Stage 1 Clutch Kit (99-00 Civic Si) Wiseco or any build demanding maximum

or any build demanding maximum valve train stability

Ideal for rebuilds

and steel nitride/Napier XX ring technology for superior heat management and wear resistance

the line features specially designed valve pockets

7:1 compression ratio maximize naturally aspirated performance and efficiency

Action Clutch Stage 1 Clutch Kit (99-00 Civic Si) Wiseco or any build demanding maximumAction 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