| Also known as | T1077 |
| Diagram | Fig. 5 — GEARBOX SHAFTS AND GEARS · ref 40 |
| Subsystem | gearbox |
| Listed in parts books | 1963–1964 |
BOLT,GEAR CHANGE PIVOT T20
Gear change pivot bolt for the T20 gearbox, listed in gearbox shafts and gears records as 57-1077 (formerly T1077).
This is the gear change pivot bolt listed for the T20 in Triumph's gearbox parts records, part number 57-1077, also cataloged under the older T1077 designation. It shows up in the gearbox shafts and gears section, which is where the gear change mechanism lives and does its work.
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As a pivot bolt, its job is straightforward: it gives the gear change lever or quadrant something to swing on inside the gearbox. These small pivot fasteners take repeated motion every time you shift, so they're worth checking if the gear change feels sloppy or loose.
Our catalog record on this one is brief, covering just two entries from the early 1960s. If you're matching this against a T20 gearbox, bring the old bolt or the parts book reference with you so we can confirm it's the right one before you buy.
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