Spec 2002-2005 Subaru WRX Aluminum Flywheel

SPEC Flywheel - Aluminum: SPEC Flywheels are CNC manufactured at an unheard-of .001 tolerance, in an industry where the standard is .010. This precision manufacturing process ensures perfect balance and a perfectly flat bedding surface for the clutch disc, both of which also contribute to the ultimate in safety for competitive environments. All SPEC flywheels carry SFI certification.

The automotive component most responsible for insuring optimum clutch performance and life is the flywheel. The flywheel's contribution to power transfer is three-fold.

Firstly, the flywheel should provide a consistent and friction enhancing surface for the clutch disc. Flywheels also aid in proper inertia, which is determined by the flywheel weight. Inertia controls the ratio of power to acceleration and can make a vehicle faster or slower based on gear ratio, tire type, vehicle weight, power output and even the location in the powerband output is achieved. The weight of a flywheel and amount of inertia it provides can also effect drivability. Lastly, the flywheel must provide a true balance at rpm, which means no dimensional runout that produces engine damaging and power robbing vibrations and allows smooth engine revolutions.

To allow for specific inertia needs, SPEC flywheels are made in high carbon billet steel and aircraft quality billet aluminum. The aluminum and most steel SPEC units are rebuildable and feature a replaceable steel friction plate that is made from a friction- enhancing steel metal specially formulated for optimum clutch bedding and holding power. The aluminum and steel materials provide a light and medium weight option for all types of racing. SPEC spends a lot of time and effort on research and development of optimum flywheel dimensions and weights for all types of driving and racing and can optimize your MOI (moment of inertia) to maximize your car's output and performance.

STARTYEAR	ENDYEAR	MAKE	MODEL	SUBMODEL	CYL	LIT	FUEL	FUELDEL	ASP	ENGDESG	NOTES
2005	2005	SAAB	9-2X	AERO	H4	2.0	GAS	FI	T	EJ205
2003	2006	SUBARU	BAJA	BASE; SPORT	H4	2.5	GAS	FI	N	EJ253
2004	2005	SUBARU	BAJA	BASE; TURBO	H4	2.5	GAS	FI	T	EJ255
2004	2005	SUBARU	FORESTER	XT	H4	2.5	GAS	FI	T	EJ255
1996	2001	SUBARU	IMPREZA	BASE; BRIGHTON; L; LX; OUTBACK	H4	1.8; 2.2	GAS	FI	N	EJ22E; EJ22EZ; EJ222; EJ223; N/A
1998	2006	SUBARU	FORESTER	BASE; L; S; X; X L.L. BEAN EDITION; XS	H4	2.5	GAS	FI	N	EJ25D; EJ251; EJ253
1994	1995	SUBARU	IMPREZA	BASE; L 4X4	H4	1.8	GAS	FI	N	N/A	4WD
1998	2006	SUBARU	IMPREZA	2.5I; OUTBACK; OUTBACK SPORT; RS; TS	H4	2.5	GAS	FI	N	EJ25D; EJ251; EJ253
2002	2005	SUBARU	IMPREZA	WRX	H4	2.0	GAS	FI	T	EJ205
1997	2004	SUBARU	LEGACY	BASE; GT; LIMITED; LSI; OUTBACK	H4	2.5	GAS	FI	N	EJ25D; EJ251; EJ252; EJ253; EJ259; N/A
1991	1994	SUBARU	LEGACY	4X4; SPORT	H4	2.2	GAS	FI	T	N/A
2001	2006	SUBARU	OUTBACK	BASE; 2.5I; 2.5I LIMITED	H4	2.5	GAS	FI	N	EJ253; EJ259