| Diagram | CLUTCH |
| Subsystem | primary |
| Listed in parts books | Not catalogued by year yet |
Spring cup 3 5TA, T90, T100
Clutch spring cup, part 71931, one of three per assembly on Triumph 5TA, T90, and T100 models.
Part number 71931 is a spring cup used in the clutch assembly on Triumph 5TA, T90, and T100 models. It shows up in the parts book under both the clutch figure and the gearbox outer cover figure, which tells you it lives at the point where the clutch springs seat against the pressure plate or cover, keeping the springs located and pushing evenly as the clutch engages.
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The catalog lists three of these per assembly, which lines up with a multi-spring clutch setup where each spring needs its own seat to sit square. These are small parts, easy to lose track of or damage when you have the clutch apart, so it is worth checking the condition of all three when you are in there rather than replacing just one.
Our listing here is tagged Lucas, but that looks like a mismatch with what this part actually is - clutch spring cups are a mechanical item, not an electrical one, so don't read anything into that tag. Catalog appearances run from 1964 to 1971 across the model line named above; if you're not sure your bike falls in that window, give us a call before you order.
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