| Listed in parts books | Not catalogued by year yet |
C/S SPROCKET BSA C15 18T
Countershaft (gearbox output) sprocket, 18 tooth, listed for the BSA C15.
This is the gearbox sprocket listed for the BSA C15, with 18 teeth. C/S stands for countershaft — it's the sprocket that sits on the gearbox output shaft and drives the final chain back to the rear wheel.
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Our catalog entry on this one is brief, and we don't have more detail on it beyond the description itself. If you're working on a C15, this is the tooth count listed for that machine's countershaft sprocket, but confirm your gearbox and chain setup matches before you order.
Call the shop if you want to talk through fitment before buying — we'd rather get you the right part the first time.
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