| Also known as | 70-4230 |
| Listed in parts books | Not catalogued by year yet |
EXHAUST VALVE,BLACK KWPM - TRI 650/750
Black-coated exhaust valve for Triumph 650/750 unit twins, PN 70-2904B (also seen as 70-4230).
This is an exhaust valve for the 650 and 750 unit-construction Triumph twins, listed in our records under 70-2904B with 70-4230 as the alternate number some parts books carry it under. It's finished black, which points to a coated valve rather than bare steel, and it lives in the cylinder head doing the job every exhaust valve does: opening to let spent gases out of the combustion chamber and sealing tight against the seat the rest of the time.
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We don't have a lot of extra detail on file beyond the basic listing, so if you're matching this to a specific engine spec or valve set, give us a call and we'll confirm it's the right one before you order.
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