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Author Topic: piston/bore help?  (Read 1649 times)

Offline ben

piston/bore help?
« on: March 23, 2015, 03:13:43 PM »
Hi all, new to this forum and sorry if ive posted in wrong place.
Measured my bore on 87 trx250r came up with 65.8mm, is this correct? Also piston measured 65.25mm? Ive only just purchased 1 week ago and any help/ advice would be appreciated, i need a budget piston kit from the uk, thanks very much
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Offline rk88r

piston/bore help?
« Reply #1 on: March 23, 2015, 04:12:59 PM »
Stock bore is 66mm. The piston is largest down on the skirt. It would be best to take it to a machine shop that is familiar with boring two strokes.
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\'99 Laeger narrow, cr link, +3+1 protrax, Peps, with a LED 363
\'88 265 pv peps
One other \'88
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