| Listed in parts books | Not catalogued by year yet |
RING SET,5T 63MM+.010 NOS
NOS piston ring set for a 63mm bore at .010 oversize, for the 5T-family engine.
This is a piston ring set, oversize by .010 inch, for a 63mm bore, cataloged as NOS (new old stock). The 5T reference points to the older pre-unit small-twin family. Since this one is bored oversize at .010, it's meant for a cylinder that's already been taken out to that dimension during a rebuild, not a standard-bore engine.
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Our records on this part number are thin beyond the basic description, so we can't tell you which years or which specific engine variants it was cataloged against. If you're rebuilding a 5T-family motor and know your bore is at 63mm plus .010, this is worth asking about, but call the shop first and we'll confirm it matches what you've got on the bench before you order.
Being NOS means it's old factory stock rather than a reproduction, so quantities on hand are whatever's left in the drawer.
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