| Also known as | 57-7067 |
| Diagram | Fig. 9 — GEARBOX SHAFTS AND GEARS · ref 22 |
| Listed in parts books | 1983 |
GEARBOX SPROCKET 21T - 5 SPEED TRIUMPH 72-ON - UK
21 tooth gearbox (countershaft) sprocket for the 5-speed Triumph gearbox, 1972-on, UK spec.
This is the 21 tooth gearbox sprocket, also called the countershaft sprocket, for the 5-speed Triumph gearbox used from 1972 onward. It sits at the output end of the gearbox, driving the final drive chain back to the rear wheel sprocket.
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The catalog lists this as a UK-spec part, and it carries the alternate part number 57-7067 in some references. Riders looking to change gearing away from the stock 19 or 20 tooth setup use this as the larger option.
We don't have additional detail on file beyond the basic listing, so call the shop and we'll confirm fitment and any clearance concerns for your gearbox before you order.
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