These are our 11 spline 4 speed mainshaft that fit our superb ultra reliable, lightweigh clutch.
Will fit all your original BSA 4 speed gears with the exception of BSA Unit single 3rd gear 24T Mainshaft 57-4665 large bore
This is when your 1st gear is an integral part of the mainshft.
41-3063 is the small bore 3rd. gear Mainshaft.
As always, we pride ourselves on quality.
Comes supplied with clutch pushrod bush already fitted and with the nuts and circlip.
To use standard gearing, 41-3089 and 57-3874 will be required.
For MX gearing, 41-3065 and 41-3073 will be required.
PES BSA B50 B44 Splined Mainshaft 4 speed G1A
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