| Listed in parts books | Not catalogued by year yet |
ENG SPROCKET A10 24T 428
24 tooth, 428 pitch engine sprocket for the BSA A10.
This is an engine sprocket, 24 tooth, for 428 pitch chain, listed for the BSA A10. The description on file names the A10 directly, so this is a BSA part, not a Triumph piece, even though it's filed here under a Triumph-style part number.
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An engine sprocket like this sits on the gearbox-side end of the crankshaft (or mainshaft, depending on the drivetrain) and drives the primary chain back to the clutch. The tooth count and chain pitch stated in the description are specific enough to matter for gearing and chain match, so if you're not sure this is the exact sprocket your A10 needs, give us a call before you order.
We don't have much more history on this one in our records beyond the basic listing, so treat this as a straightforward BSA A10 engine sprocket and confirm chain pitch and tooth count against what's currently on your bike.
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