Clutch Masters 2-Piece Billet Aluminum Flywheels are made from the highest quality 6061-T6 or better grade aluminum. This material is chosen for its properties that are much more suitable for the environment than the one-piece chromoly units, with regards to heat dissipation and serviceability. The replaceable friction surface used is incredibly tough high carbon steel. This allows mating with any type of clutch friction material without worry. The starter ring gears are made of high carbon heat-treated steel for long lasting durability. The unit is buttoned together with military grade fasteners to make the premier flywheel in the industry. *Features* * Reduced mass equals increased acceleration. * A lightweight flywheel works particularly well with turbo-charged engines because it reduces typical turbo lag. * Increased supercharger efficiency due to less parasitic drag on the crank. * Improved mid-range torque in a normally aspirated engine due to not having to overcome the heavy weight of a stock flywheel. * CM uses only 6061-T6 aircraft grade or better billet aluminum in the manufacturer of its flywheels. * CM uses High Carbon steel for the friction surface. (Replaceable) * CM uses an OEM steel ring gear secured by bolts. * CM offers a limited lifetime warranty. * CM Billet Aluminum Flywheels meet SFI Spec 1.1 or 1.2 PartNumber : cmFW-1954-SF Description : Lightweight Steel Flywheel Weight : 35lbs 2012-2013 Ford Mustang Boss 302 V8.4951cc Drivetrain::Flywheels 1996-2004 Ford Mustang GT V8.-cc Drivetrain::Flywheels 2011-2017 Ford Mustang GT V8.4951cc Drivetrain::Flywheels 2015 Ford Mustang GT 50 Years Limited Edition V8.4951cc Drivetrain::Flywheels 2001 Ford Mustang GT Bullitt V8.-cc Drivetrain::Flywheels 2015-2017 Ford Mustang GT Premium V8.4951cc Drivetrain::Flywheels 2003-2004 Ford Mustang Mach I V8.-cc Drivetrain::Flywheels 2007-2012 Ford Mustang Shelby GT500 V8.5409cc Drivetrain::Flywheels 2008-2009 Ford Mustang Shelby GT500KR V8.5409cc Drivetrain::Flywheels 1996-1999 Ford Mustang SVT Cobra V8.-cc Drivetrain::Flywheels 2001 Ford Mustang SVT Cobra V8.-cc Drivetrain::Flywheels 2003-2004 Ford Mustang SVT Cobra V8.-cc Drivetrain::Flywheels 2003 Ford Mustang SVT Cobra 10th Anniversary V8.-cc Drivetrain::Flywheels