As EN531 but drilled to suit 6 bolt crankshaft 2000 engines when fitted into an early pre-1968 car with mechanical clutch and gearbox. Suitable for 220mm ID 105 tooth ring gear (sold separately part number EN084). Designed and developed by UK Alfa competition engine builder Jim Evans and fitted with a carbon steel friction ring. Ultra light and very strong - only 3.55 kg. Superior to an all-steel flywheel as it is significantly lighter and you can replace the steel friction ring when it eventually wears rather than replace the whole flywheel. Suitable to match with our GTA Clutch kit available under item code CL024. We can supply a different version of this flywheel that uses the later larger clutch but with the early 105 tooth ring gear. Please enquire.