| Also known as | CR-3115 |
| Listed in parts books | Not catalogued by year yet |
VALVE GUIDE REAMER .3115 (CARBIDE) MNZ AND IRON GUIDES
A .3115 carbide reamer for finishing bronze or cast iron valve guide bores.
This is a .3115 carbide valve guide reamer, listed for use on both bronze (MNZ) and cast iron valve guides. It's a shop tool rather than a bike part - you'd reach for this when you're refacing or cleaning up a guide bore before fitting a new valve or guide, getting the bore back to true size and finish so the valve stem seats and moves the way it should.
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Carbide construction holds an edge longer than plain steel reamers, which matters when you're working iron guides that dull tooling fast. The .3115 size ties it to a specific guide bore spec, so double check that number against what your guides actually call for before you buy - reamers are sized tight for a reason.
We don't have much more detail on file for this one beyond the size and material spec. If you're not sure this is the right reamer for your guides, call the shop and we'll help you sort it out before you order.
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