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Dirt Bike Mods & Maintenance
Top End Rebuild (Need Help!)
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[QUOTE="Rockey5000, post: 379911, member: 30945"] After 3 years of riding, my friends CR80 needs a new top end. We looked into it a bit and have found pistons like SB is a .02 oversize and SC which is a .04 oversize. The cylinder has never been bored, so why would an oversize piston be nesscesary? The smallest I could find was a Pro X SB .02 oversize piston. Is this the correct one? What will come with the piston kit, should we order a Wristpin Bearing too?Will we need to buy a seperate gasket set too? Thanks in advance for any help! [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Top End Rebuild (Need Help!)
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