Fidanza 72-87 Jaguar XJ6 / 49-54 XK120 / 55-57 XK140 Aluminum Flywheel

If you're looking to get more out of your Jaguar's engine, especially during spirited driving or track use, a lighter flywheel can make a notable difference. This aluminum flywheel from Fidanza is designed to replace the heavy stock unit in many classic Jaguar models, including the XJ6, XK120, and XK140, offering a significant weight reduction that translates directly to improved performance.

Fidanza crafts this flywheel from a solid billet of 6061 T6 or 2024 T4 aluminum, which is 40-60% lighter than the original cast iron or steel component. This lower moment of inertia means the engine can rev up and down much faster, giving you quicker acceleration and a more responsive throttle feel. The friction surface is a heat-treated plate, ensuring it can handle the demands of consistent engagement and provide a solid grip for your clutch. For added reliability and ease of service, it features a replaceable hardened 1050 steel ring gear and a bolt-on replaceable friction plate, so you won't need to replace the entire flywheel if the friction surface wears over time. Fidanza also uses military-spec fasteners, which are known for their strength and dependability, ensuring everything stays securely in place even under stress.

This flywheel is a substantial upgrade for drivers who want to unlock more of their Jaguar's potential. It fits a range of classic Jaguar models, including the XJ6, XK120, XK140, XKE, and Mark X. While it's a direct replacement for the stock flywheel, remember that installing a lighter flywheel can change the driving characteristics of your vehicle, making it rev more freely. Ensure your clutch components are in good condition before installation, as they will be working with this new, lighter flywheel.