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YZ250F 310cc Big bore Stroker

YZ250f big bore / stroker 310cc. Bolt in for 2003-2009. Total for the kit: $880.00. Includes Brand New +3mm Stroker crankshaft assembly. Brand new aluminum nikasil plated 83mm cylinder. 83mm Lukesracing Custom order light weight two ring design JE piston kit, Cometic big bore top-end gasket set. This cylinder casting looks nearly identical to the stock cylinder casting from the outside, it even has 249cm3 cast into it. This is not a yamaha overbored cylinder, it is a Brand new Custom made Big bore cylinder. This is a bolt in kit, no case mods or any other mods needed to install. Carb re-jetting will be required.
Free UPS ground shipping in USA. We will give $35.00 off if you send your old cylinder.

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