| Diagram | Fig. 14 — CLUTCH · ref 20 |
| Subsystem | primary |
| Listed in parts books | 1974, 1976–1980, 1985 |
SPRING,CLUTCH T140
Clutch pressure plate spring for the Triumph T140, sold to replace the set that clamps the clutch plates together.
57-4644 is the clutch spring used in the clutch pressure plate assembly on the T140 twins. These are the small coil springs that sit under the pressure plate and provide the clamping load that keeps the clutch plates locked together for drive - when you pull the lever in, you're compressing this spring set to let the plates slip apart.
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The catalog lists this one specifically as the T140 clutch spring, and it shows up across clutch figures from the mid-70s into the mid-80s production run. If you're rebuilding a slipping or grabby clutch, these are cheap enough to replace as a set rather than guess which one has gone soft.
Worth noting there are other clutch springs in the Triumph lineup with different spring rates for different uses - if you're not sure which one your bike takes, check your parts book figure or give us a call before ordering.
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