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YZ250F / WR250F 2005-2013

  • Machined from 2618 T6 high tensile forged aluminum

  • Dome/Dish features smooth flowing radii and require no deburring or preparation

  • JE designs are specifically engineered for extreme applications including professional competition

  • Pins, pin fitment, lock and rings included
YZ250F / WR250F 2005-2013
Std Bore: 77mm
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
247937 249cc 77mm STD 13.5:1 167 FSR JC3501-3031 630-1650-12-93C 630-050-MW OEM
274182 249cc 77mm STD 14.0:1 170 FSR JC3501-3031 630-1650-12-93C 630-050-MW OEM
247939 262cc 79mm +2mm 13.0:1 175 FSR JC3401-3110 630-1650-12-93C 630-050-MW Call
247940 270cc 80mm +3mm 13.0:1 178 FSR JC7001-3150 630-1650-12-93C 630-050-MW JC7904 M

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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