Fidanza Aluminum Flywheels are made from 6061 T6 billet aluminum for superior strength and weight reduction. Fidanza flywheels are CNC machined at a constant speed for precise fit and finish, and feature a replaceable 1045 high-carbon steel friction plate with AN military-grade fasteners and a hardened 1050 ring gear. You will never have to replace your flywheel again as you can just swap friction plates, and reinstall. All these features make this a quality lightweight flywheel at a great price. The Fidanza Mini Cooper & Cooper S flywheel is SFI Certified, and weighs 11 pounds, resulting in no check engine lights or misfire codes.

SPEC aluminum flywheels are CNC machined and exceed SFI standards for high stress racing applications. These units are recommended for highly modified street or racing vehicles, and for mildly modified street cars that can benefit from reduced rotating mass without the loss of daily drivability. The body of the flywheel is made of tempered aluminum, either 6061 T6 or 2024 T3, for ultimate strength and lightest possible weight. The 1/4 inch thick friction plate is a 1050 high carbon alloy, for incredible durability with any friction disc material, even iron. The plates are secured to the body by aerospace fasteners. The ring gears are pressed on and secured with grade 10 fasteners. The gear is also heat treated for added durability and longevity.

The ACT Streetlite flywheel is made from premium quality forged Chrome-Moly steel, CNC machined, and balanced. It also features an induction-hardened integral ring gear, and is durable and thick enough to be resurfaced. Certified to SFI Specification 1.1.

Made from 6061-T6 aircraft grade billet aluminum with a replaceable high-carbon steel friction surface and an OEM steel ring gear secured by bolts, Clutch Masters flywheels are some of the finest available on the market. Each unit is certified to meet SFI Spec 1.1 or 1.2 and is backed by a limited lifetime warranty.