This is the gearbox shell used on the MK3 models. The only real difference between this shell and the pre-MK3 shells, is the neutral switch hole. If you want to use this shell on a pre-MK3, all you need to do is plug up the switch hole with a 3/8 x 24 bolt and sealing washer. If you ask we can supply the bolt and washer.
Norton Parts .Gearbox
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