| Also known as | B88A |
| Listed in parts books | Not catalogued by year yet |
VALVE GUIDE +.002,CAST IRON EXHAUST (LONGER) 650/750 TRIUMPH 503
Cast iron exhaust valve guide, +.002 oversize, longer style, for the 650/750 Triumph twins.
This is a valve guide for the exhaust side, machined .002 in. oversize and cast in iron. The catalog description notes it's the longer version, and it's listed against the 650/750 Triumph range. If your guide bores have already been reamed out from a prior rebuild, an oversize guide like this lets you get a proper interference fit back into the head instead of chasing a worn hole with an undersize part.
Read more
The old-book alias for this one is B88A, so if you're working from an older parts list or a box of parts pulled off a bike years ago, that's the number you might see stamped or written down instead of 70-2900/002.
We don't have more detail on this one beyond what's in the description, so if you're not sure whether your head needs the +.002 size or a standard guide, measure the existing bore or give us a call before you order.
Sorry if we got something wrong here. If you think this information isn't correct, .