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millydog

rebore

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just having my 87 xr600 rebored and new piston cylinder was standerd do i fit a standerd head gasket or thee oversize 100mm one any help cheers Gareth.

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Guess I don't understand the question. The stock bore is 97mm. If you put in a 100mm piston, then you need a 100mm gasket. Otherwise use a stock gasket.

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sorry i should of said the cylinder is only slightly scored so i will get away with a 1mm rebore and over size piston at the most.cheers.

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sorry i should of said the cylinder is only slightly scored so i will get away with a 1mm rebore and over size piston at the most.cheers.

Dude...what are talking about?

If you need to bore, you need to take an oversized piston and your cylinder to a machine shop. If you're going to run an OEM piston, you have two choices.

PISTON (OS 0.25) 205959-001 $92.44

PISTON (OS 0.50) 206274-001 $92.44

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