The JB Racing Aluminum ULTRA-LITE Racing Flywheel offers a major reduction in the high rotational mass of the stock 964, 993 & 996/GT3R flywheel, enabling your engine to rev faster. This results in quicker shifts and makes rev-matching much easier.

Specifically engineered to enhance performance in street-driven vehicles, JB Racing’s lightweight aluminum flywheels lower both static weight and Moment of Inertia (MOI). This improved design allows the engine to spin up more rapidly and requires less energy to accelerate, meaning more power is transferred directly to the wheels.

Each flywheel is crafted from billet aluminum in a “single-mass” configuration, carefully replicating the critical dimensions of the original OEM flywheel. They are fully compatible with factory clutch components.* Every JB Racing flywheel is produced using advanced CNC machining and is meticulously designed, machined, assembled, balanced, inspected, and packaged in-house at their facility.

Renowned as one of the top precision machine shops in the nation, JB Racing is trusted by professional race teams for their engine and driveline component work. Their Porsche flywheels are crafted with the same high standards and precision demanded by these elite teams, unlike many standard aftermarket alternatives. Key features include:

• CNC-machined flywheel, zero-balanced to ensure smooth operation without vibration
• Replaceable hardened steel clutch surface that is securely bolted (not riveted)
• Heli-coil inserts in the pressure plate mounting holes to prevent stripping during clutch changes
• Factory-specification starter ring gear
• Hardened steel gall plate to protect against bolt damage
• Included hardware: flywheel bolts, pressure plate bolts, and dowel pins
• Captive 10mm dowel pin design for added security
• All metric hardware for pressure plate installation
• Weighs only 7.5 pounds compared to the stock 16.5-pound flywheel