| Also known as | T3930 |
| Diagram | Fig. 10 — CLUTCH · ref 2 |
| Subsystem | primary |
| Listed in parts books | 1970, 1974 |
CLUTCH HUB TRIUMPH 500 UNIT
Clutch hub for the Triumph 500 unit-construction twin, part number 57-3930 (formerly T3930).
This is the clutch hub for the Triumph 500 unit-construction twins, part number 57-3930, also found under the older T3930 designation in earlier parts books. It lives in the primary side, in the clutch assembly, where it carries the clutch plates and transfers drive from the primary chain through to the gearbox mainshaft.
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Our catalog data ties this one to the 500 unit engine family, with a single appearance recorded for 1971. If you're working on a Tiger 100 clutch job and need to sort out which hub matches your bike, bring us the numbers off your old part or your parts book page and we'll confirm before you order.
Given how specific this component is to the 500 unit clutch, it's worth double-checking against what's currently in your primary case rather than assuming interchange with other Triumph twin sizes.
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