SPEC Clutch Steel Flywheel; Includes Race Bolt Kit & Flange Plate BMW 525I


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Part #: SB64S
Notes: Steel Flywheel
Includes Race Bolt Kit & Flange Plate
MSRP: $699.00
Your Price: $629.10
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Specs

FW Weight 20lbs

All Fitments

BMW
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2000 - 2000 323CI ALL ALL ALL ALL ALL ALL
1999 - 2000 323I ALL ALL ALL ALL ALL ALL
1998 - 1999 323IS ALL ALL ALL ALL ALL ALL
2001 - 2006 325CI ALL ALL ALL ALL ALL ALL
2001 - 2005 325I ALL ALL ALL ALL ALL ALL
2001 - 2005 325XI ALL ALL ALL ALL ALL ALL
2000 - 2000 328CI ALL ALL ALL ALL ALL ALL From 4/99 Production Date
1996 - 1999 328I ALL ALL ALL ALL ALL ALL Thru 3/99 Production Date
1999 - 2000 328I ALL ALL ALL ALL ALL ALL From 4/99 Production Date
1996 - 1999 328IS ALL ALL ALL ALL ALL ALL Thru 3/99 Production Date
2001 - 2003 330CI ALL ALL ALL ALL ALL ALL Thru 2/03 Production Date
2001 - 2003 330I ALL ALL ALL ALL ALL ALL Thru 2/03 Production Date
2001 - 2003 330XI ALL ALL ALL ALL ALL ALL Thru 2/03 Production Date
1989 - 1995 525I ALL ALL ALL ALL ALL ALL
2001 - 2001 525I ALL ALL ALL ALL ALL ALL
1993 - 1995 525IT ALL ALL ALL ALL ALL ALL
1997 - 1998 528I ALL ALL ALL ALL ALL ALL
1999 - 2000 528I ALL ALL ALL ALL ALL ALL
2001 - 2005 530I ALL ALL ALL ALL ALL ALL 5Speed Trans
1994 - 1995 M3 ALL ALL ALL ALL ALL ALL
1996 - 1999 M3 ALL ALL ALL ALL ALL ALL
2001 - 2006 M3 ALL ALL ALL ALL ALL ALL 6Speed Trans
2001 - 2005 X5 3.0I L6 3.0 ALL M54 ALL
1997 - 1998 Z3 ROADSTER L6 2.8 ALL M52 ALL
1998 - 2000 Z3 COUPE
ROADSTER
L6 2.8 ALL M52
M52TU
ALL From 10/98 Production Date
1999 - 2001 Z3 M COUPE
M ROADSTER
L6 3.2 N S52
S54
GAS
1999 - 2001 Z3 ROADSTER L6 2.5 N M52
M54
GAS
2001 - 2002 Z3 COUPE
ROADSTER
L6 3.0 N M54 GAS
2003 - 2004 Z4 2.5I ALL 2.5 ALL ALL ALL
2007 - 2008 Z4 M COUPE L6 3.2 N S54 GAS

Product Description

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.

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