| Also known as | 80-62397, E409 |
| Diagram | Fig. 15 — EXHAUST PIPES AND SILENCERS · ref 5 |
| Subsystem | exhaust |
| Listed in parts books | 1960–1962, 1964–1970 |
Bolt (1.0625 in. U.H.)
Exhaust header clamp bolt (1.0625 in. U.H.), also listed as E409 or 80-62397.
This is the exhaust header bolt used on the finned clamp at the head, where the exhaust pipe locks into the cylinder head port. The catalog calls it out simply as a 1.0625 in. U.H. bolt, and it shows up under the older E409 stamping as well as the 80-62397 form for folks working from a different numbering scheme.
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You'll find this bolt referenced across a handful of exhaust system figures, including exhaust pipes and mufflers listings for the TR6R and T120R, and general engine unit fittings and footrests pages, which tells you it's a standard fitment across multiple exhaust setups rather than something unique to one model. The catalog appearances span the mid-to-late 1960s into the early '70s.
Worth having on hand if you're servicing the exhaust clamp area since these bolts see heat cycling and vibration over the years. Check your own parts book listing against the aliases here before ordering to make sure you've got the right one for your bike's setup.
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