| Diagram | CYLINDER AND CRANKSHAFT |
| Subsystem | engine bottom |
| Listed in parts books | Not catalogued by year yet |
Nut, exhaust pipe collar (2 B.A.)
2 B.A. nut for the exhaust pipe collar at the cylinder joint.
This is the nut that clamps the exhaust pipe collar to the cylinder, threaded 2 B.A. per the catalog record. It shows up in the CYLINDER AND CRANKSHAFT section of the parts book, which tells you it's dealt with right at the head/pipe joint rather than further back along the exhaust system.
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The catalog only ties this one to a single year of listings, so we don't have a broader fitment picture beyond that. If you're trying to match this against your bike, check your parts book figure and compare thread and collar shape before ordering.
It's a small, unglamorous nut but the kind of thing that's easy to lose track of or strip out if someone's been in and out of that joint a few times. Worth having a spare on hand if you're pulling the head or exhaust pipe.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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