| Also known as | 50-50004, JRC 50-50004 |
| Listed in parts books | Not catalogued by year yet |
VALVE SPRING SET 750/850 NORTON - KWPM (OEM SPEC)
OEM-spec valve spring set for the Norton 750/850 twin.
This is a valve spring set for the Norton 750/850 twin, catalogued as OEM spec under the KWPM designation. It's a Norton part, not a Triumph one, despite showing up in our system under a JRC part number - JRC being the supplier code on this one rather than the original maker.
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Valve springs do the basic job of closing the valve after the cam and rocker have opened it, and a matched set means both springs on the head come from the same batch so spring pressure stays even across the engine. This one is listed as a set, so expect more than one spring included.
We don't have more detail on this one beyond what's in the catalog line. If you're matching this against a rebuild kit or an existing engine, call the shop and we'll confirm fitment before you order.
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