| Diagram | Fig. 6 — GEAR CLUSTER, CAMSHAFT · ref 40 |
| Listed in parts books | 1969–1972 |
BSA Gear — mainshaft first (14 teeth)
Mainshaft first gear, 14 teeth, for the gearbox cluster shown in the camshaft/gear cluster parts book figures.
68-3150 is a mainshaft first gear with 14 teeth, part of the gearbox internals shown in the gear cluster and camshaft figures in the parts book. It's one of the pairs of gears that make up first gear in the box, meshing with its layshaft counterpart to give the lowest ratio.
Read more
The catalog places this across appearances from 1969 through 1972, but we don't have a specific model tied to it beyond that — the figure titles confirm it's a gearbox internal gear, not which machine it was fitted to. If you're rebuilding a box and matching tooth counts off the old gear, this is a straightforward one to check against: 14 teeth, mainshaft first.
If you're not sure this is the right gear for your cluster, give us a call with what you've got on the bench and we'll sort out fitment before you order.
Sorry if we got something wrong here. If you think this information isn't correct, .