| Also known as | R26730/020 |
| Listed in parts books | Not catalogued by year yet |
RING SET 850 NORTON 020
Piston ring set for the Norton 850 engine, sized .020 over standard bore.
This is a ring set for the Norton 850 engine, sized at .020 over standard bore. The part number JRCNOR850R/020 (also cataloged as R26730/020) shows up in our records as a plain listing without a lot of surrounding detail, but the description is clear about what it is: a piston ring set for an 850cc Norton, oversized to the .020 rebore spec.
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If you've had your Norton barrels bored out to .020 over, this is the ring set that matches that dimension. Ring sets like this are sold as a full set to go with your piston size after a rebore job, so make sure your bore is actually machined to that spec before ordering.
We don't have more background on this one beyond what the catalog tells us. Give the shop a call if you want to double check fitment against your specific engine before you order.
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