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Honda MX & Off-Road Dirt Bikes
Piston Question for 91 CR250
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[QUOTE="mifun3, post: 1016161, member: 65745"] Hi Guys, I want to replace the piston in a bike I just purchased. The current piston is a 67.5 mm My question is if the piston is 67.5mm, does it mean the cyl has been resleeved cause according to the Wiseco web site (Chart below) It says that the bike has a Nikasil bore????? Piston and cylinder are nice and clean but would rather replace now then end up having a piston skirt crack in middle of summer. If cyl is equal (not deformed) should I just order a 67.5 piston? Thanks, Mike CR250 Pro-Lite *Nikasil Bore - Cylinder sleeving or replating required for oversizes 1986-96 66.4x72 249 66.4 - STD 66.75- 0.35 67 - 0.60 67.25 - 0.85 67.5 - 1.10 68 - 1.60 68.25 - 2.10 [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
Piston Question for 91 CR250
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