| Also known as | T1370 |
| Diagram | Fig. 8 — GEARBOX SHAFTS AND GEARS · ref 4 |
| Subsystem | gearbox |
| Listed in parts books | 1960–1962, 1964–1965, 1967–1968, 1970 |
BUSHING,MAINSHAFT HIGH GEAR- 650 4 SPEED - USA MADE - JRC SUPERIOR BRAND
Mainshaft high gear bushing for the 650 four-speed Triumph gearbox, catalog number 57-1370 (formerly T1370).
This is the mainshaft high gear bushing for the 650 four-speed gearbox, listed in the catalog as 57-1370 and known under the older T1370 number. It shows up in the parts book under gearbox shafts and gears, where it locates and supports the high gear as it spins on the mainshaft, taking the load and keeping things running true instead of wearing directly on the shaft itself.
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This is one of those parts nobody thinks about until the gearbox starts sounding rough or feels like it's got play in it that shouldn't be there. A worn bushing lets the gear wander around on the shaft, which chews things up further if it's left alone.
Our listing carries this under the USA-made JRC Superior brand. It appears across a run of catalog years in the 650 four-speed gearbox line - give us a call if you want us to confirm exact fitment for your box before you order.
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