| Diagram | Fig. 6 — GEAR CLUSTER, CAMSHAFT · ref 22 |
| Listed in parts books | 1969–1972 |
BSA Bearing, mainshaft gear-side (Hoffman LS.8)
Mainshaft gear-side bearing (Hoffman LS.8 designation) used in the gear cluster / camshaft area of the gearbox.
This is 57-3621, listed in the parts books as the mainshaft gear-side bearing, Hoffman LS.8 type. It turns up in the GEAR CLUSTER, CAMSHAFT figures, so it lives inside the gearbox where the mainshaft rides.
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Our catalog data doesn't say much beyond that figure placement — no dimensions or fitment years are spelled out for this specific line beyond a 1969–1972 span across the catalog appearances. If you're matching this up to a rebuild, best to check the physical bearing against your gearbox before ordering.
Give the shop a call if you want us to confirm this is the right one for what you've got apart on the bench.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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