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Shop/Category/Parts catalog/PISTONS T140/TR7 +080 JCC
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Also known as18-89408
Listed in parts booksNot catalogued by year yet

PISTONS T140/TR7 +080 JCC

A +.080 oversize piston listed for the T140/TR7 twins, part number JRC 750/080T.

PN · JRC 750/080T
Available in 5 sizes (rebore oversizes):

This is a piston listed for the T140/TR7 unit-construction twins, machined to the +.080 oversize. It carries the JRC part number 750/080T, with 18-89408 showing up as an alternate form of the same listing in our records.

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Oversize pistons like this one come into play when a cylinder bore has been taken out past standard to clean up wear or damage, and the +.080 marking tells you exactly how much oversize this piston is cut for. Because bore work is specific to each engine, matching the oversize stamp to what your machinist actually bored to matters more than matching the model name alone.

We don't have much more detail on this listing beyond the description itself, so give us a call with your bore measurements before ordering to make sure this is the right size for your rebuild.

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