| Diagram | Fig. 14 — CLUTCH · ref 8 |
| Subsystem | primary |
| Listed in parts books | 1972, 1974, 1976–1980, 1983, 1985 |
BOLT INNER TO OUTER PLATE - High Tensile Steel
High tensile steel bolt that joins the clutch inner and outer plates on Triumph unit twins and triples.
This is the bolt that ties the clutch's inner and outer plates together on Triumph unit-construction twins and triples, part number 21-2157. It shows up in the clutch figure across catalog listings running from 1974 into 1985, and it's made from high tensile steel to stand up to the clamping loads inside the clutch assembly.
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These bolts hold the clutch basket together as a single unit, so torque and condition matter more than they might on a stray bit of hardware elsewhere on the bike. If you're rebuilding a clutch and these are worn, buggered, or stretched, it's worth replacing the full set rather than mixing old and new.
Check the thread and length against what's actually on your bike before ordering, since clutch hardware can vary across the years this figure covers.
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