Fidanza Performance 119421 Fidanza 72-87 Jaguar XJ6 / 49-54 XK120 / 55-57 XK140 Aluminum Flywheel - Fits select 1949-1987 Jaguar models

Aluminum Flywheel 133T Ring Gear.

Flywheel-Aluminum PC Smart; High Performance; Lightweight with Repl Friction

Features and Benefits: 40-60 Percent Lighter Than Stock For Quicker Acceleration; Billet 6061 T6 Or 2024 T4 Aluminum Body; Bolt-on Replaceable Friction Plate; Heat Treated Friction Plate For Optimum Grip And Long Life; High Performance And Lighter Weight To Free Additional Horsepower; Lower MOI For Faster Throttle Response; Military Spec Fasteners For Reliability And Strength; Replaceable Hardened 1050 Steel Ring Gear; Stepped Dowels On Most Applications