| Diagram | Fig. 23 — 850 Exhausts, Mufflers, Mutes, Passenger Footpegs · ref 25 |
| Subsystem | exhaust |
| Listed in parts books | 1975 |
Norton Lockring, Exhaust
Exhaust pipe lockring, catalog-listed for 1975 - keeps the exhaust joint from loosening.
This is a lockring for the exhaust pipe connection, listed in the exhaust and muffler section of the parts book. It's the small hardware that keeps the exhaust pipe joint secure where it meets the cylinder or head, so it doesn't work loose from vibration and heat cycling over time.
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Our catalog record for this one is thin - it only turns up in a single listing tied to the 1975 model year, so we can't speak to a wider fitment range beyond that. If you're chasing this for a specific bike, give us a call and we'll confirm it matches what's on your machine before you order.
The manufacturer field on this part points to Norton, and other catalog listings for this same number reference an exhaust pipe nut for an 850, which lines up with that. Worth having on hand if the one currently on the bike is stripped or rounded off, since a bad lockring is a common reason for an exhaust joint working loose.
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