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| Listed in parts books | Not catalogued by year yet |
BSA GEAR, 1/2 TIME,M20, B31-4
Half-time timing gear for BSA M20, B31, and B4 models.
PN · 65-0692
This is a half-time timing gear listed for the M20, B31, and B4 models. It's a BSA part, not a Triumph piece, and it lives in the timing chest where it drives the camshaft and points at half the speed of the crankshaft.
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The catalog record on this one is thin — we don't have more detail beyond the listing itself. If you're sourcing this for a rebuild, call the shop and we'll confirm fitment against your specific engine before you order.
$80.49
Pin your bike to check this part fits.
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