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5:1 compression ratio provide a balanced platform for street and moderate boost applications
H Series delivers precise manifold absolute pressure readings for enhanced engine performance and tuning accuracy
The top-mount design optimizes turbo positioning for improved airflow dynamics and efficient boost response
it withstands high combustion temperatures while preserving a tight seal through repeated heat cycles
Action Clutch Stage 4 Clutch Kit (99-00 Civic Si) suspension 5:1 compression ratio provide aAction 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
