| Diagram | Fig. 23 — REAR WHEEL — USE WITH SMITHS SPEEDO DRIVE BOX R/H SIDE · ref 26 |
| Subsystem | wheels |
| Listed in parts books | 1979–1980 |
Sprocket 47 tooth
47 tooth rear wheel sprocket for Triumph twins, used with either the Smiths or Veglia speedo drive box setup.
This is the 47 tooth rear wheel sprocket, part number 37-7064. The catalog figures place it in the rear wheel assembly, with separate figure notes for setups using the Smiths speedo drive box on the right-hand side and the Veglia speedo drive box on the left-hand side, so the correct rear wheel figure to check depends on which speedo drive gearbox your bike carries.
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It's a bolt-on sprocket that mounts to the rear wheel hub and takes the drive from the final drive chain, turning the rear wheel with each revolution of the gearbox output. Our catalog record for this one runs across appearances tied to 1979-1980, so treat that as the span the catalog data supports rather than a hard cutoff in either direction.
Before ordering, check which speedo drive box your rear wheel uses (Smiths or Veglia) since that determines the correct figure and hub setup this sprocket pairs with. If you're not sure which you've got, give the shop a call and we'll help sort it out.
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