| Also known as | T397 |
| Diagram | Fig. 7 — GEARBOX INNER COVER AND SELECTORS · ref 17 |
| Subsystem | gearbox |
| Listed in parts books | 1960–1962, 1964–1965, 1967–1972 |
Camplate operating quadrant
Gearbox camplate operating quadrant that links the gearchange lever motion to camplate rotation, also known by its earlier part number T397.
The 57-0397 camplate operating quadrant is a gearbox internal, part of the mechanism that translates the movement of your gearchange lever into rotation of the camplate, which in turn moves the selector forks across the gears. It lives under the gearbox inner cover, in the same assembly area covered by the inner cover and selectors figure in the parts book.
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On earlier bikes this part was cataloged as T397 before Triumph moved to the numeric part numbering system, so if you're working from an older parts book or a well-worn engine plate, that's the number you'll see instead of 57-0397. Same physical piece either way.
Our records show this one tied to a single model year, 1968, so before you order, have your gearbox internals in front of you or your frame and engine numbers ready so we can confirm it's the right one for your box.
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