The Competition Clutch Forged Ultra Lightweight Steel Flywheel is recommended for forced induction and/or track and rally racing applications. This flywheel will work with ALL performance and stock clutch assemblies. *Qualities of the CCI Ultra Lightweight Steel Flywheel* * One piece ring gear for high durability * Weight varies from 8 lbs. to 10 lbs. depending on application * Well suited for Stage 3 and up clutch kit applications * Stamped with 4140 plate with 2000 ton pressure at 1260 degrees * CNC machined and balanced to O.E. specifications Reduced Mass = Increased Accleration Meets and exceeds SFI 1.5 PartNumber : comp2-800-STU Description : Forged Ultra Lightweight Steel Flywheel FW Weight : 11lbs 2002-2006 Acura RSX Type-S L4.1998cc Drivetrain::Flywheels 2008 Honda Civic MUGEN Si L4.1998cc Drivetrain::Flywheels 2002-2011 Honda Civic Si L4.1998cc Drivetrain::Flywheels