This is the gasket that fits between the inner and outer gearbox castings fitted to the Norton Laydown style gearbox's that were introduced on all Norton models from 1951 (all singles, twins and Featherbed DOHC Manx Models) and were used until the introduction of the AMC type gearbox in 1957.
Made in nice quality black oil resistent material by a specialist UK based gasket manufacturer.
Note - Jan 2021 - We are looking to have patterns made for the small oval shape inspection gasket for the clutch worm cover, email at sales@racingvincent.co.uk for details