Action Clutch Stage 1 (2012-2015 Civic Si K24Z7) Wiseco This 3-inch race muffler features

This 3-inch race muffler features a straight-through design that maximizes exhaust flow while maintaining a commanding exhaust note

Supertech valve keepers are precision-engineered components designed to secure valve springs on Honda and Acura engines

For total grip activation match with Whiteline Sway Bar and Essentials kit for unrivaled handling and optimal vehicle performance

Engineered for high-revving D-Series engines

Action Clutch Stage 1 (2012-2015 Civic Si K24Z7) Wiseco This 3-inch race muffler featuresAction 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