Hays aluminum flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing. Features replaceable steel surface insert. Precision balanced to either neutral (internal) or Detroit (external) specifications. Meets SFI specification 1.1 for racing.

Product Features:

• Certified Billet Material
• Borg and Beck Clutch Pattern
• Long-Style Clutch Pattern
• Ring Gear Securely Mounted To Prevent Spinning