| Listed in parts books | Not catalogued by year yet |
ENGINE CRANK SPROCKET PREUNIT TRIUMPH 22T
22-tooth engine crankshaft sprocket for pre-unit Triumph twins, drives the primary chain.
This is the engine sprocket for pre-unit Triumph twins, cut with 22 teeth. It mounts on the crankshaft and drives the primary chain back to the clutch, so it's one of the parts that determines your primary chain gearing on these older engines.
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The catalog lists this as the 22-tooth version, part number 70-3108/22, for the pre-unit engine family. If you're rebuilding a primary drive or chasing a chain-wear problem, this is worth checking against your existing sprocket for tooth count before you order.
We don't have much more written down on this one beyond what's in the description, so if you're not sure this is the exact sprocket your pre-unit engine takes, give us a call and we'll help confirm before you buy.
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