The SPEC Clutch Aluminum Flywheels SB53A-2 is a high-performance flywheel designed for use in automotive applications. It is made from lightweight aluminum for improved performance and reduced rotational mass. This flywheel is specifically designed to work with SPEC Clutch kits and is compatible with a wide range of vehicles. It features a durable construction and precision balancing for smooth operation and improved engine response. The SB53A-2 flywheel is a direct replacement for the stock flywheel and is an ideal upgrade for those looking to improve their vehicle's performance.