ACT K-Series Clutch 06-11 Civic & 02-06 RSX & TSX Sport Perf Street Sprung Clutch Kit

All non Type-S RSX models and 01-05 Civic Si models must use ACT Flywheel or factory RSX Type S Flywheel (Not included in Kits). Sport/Perf Street Sprung Light to moderate pedal effort, smooth engagement, OE to mild gear rattle; Longer clutch life achieved through ACT's exclusive diaphragm design; Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade; Recommended for street and race use; 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability AR1-SPSS kit features a Sport pressure plate for a nice upgrade. ACT Sport pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Performance street discs are the most popular disc purchased. They feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs feature a reduced marcel for faster shift action to complement ACT pressure plates. Quiet operation with increased strength and reliability.

Fitment:
Acura RSX Base 2002 to 2006
Acura RSX Type-S 2002 to 2006
Acura TSX Base 2004 to 2008
Honda Civic MUGEN Si 2008
Honda Civic Si 2002 to 2011

RSX Base needs ACT Flywheel or Type-S Flywheel for oem.
Or any of the k-series aftermarket flywheels.
But for best measure we suggest using the ACT flywheel so there is no issue with proper mating.