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1987-2012 NINJA 250R

  • Machined from 2618 T6 high tensile forged aluminum

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

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

  • Rings, Pins and Wire locks are included in the kit
2008-2012 NINJA 250R
Std Bore: 62mm
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
284686 249cc 62mm STD 12.0:1 134 ROUND XA6200 630-1750-12-93C 630-050-MW Call
284687 249cc 62mm STD 12.5:1 135 ROUND XA6200 630-1750-12-93C 630-050-MW Call
284688 249cc 62mm STD 13.0:1 136 ROUND XA6200 630-1750-12-93C 630-050-MW Call
292754 265cc 64mm +2mm 12.5:1 148 ROUND XA6400 630-1750-12-93C 630-050-MW Call
300173 265cc 64mm +2mm 13.5:1 149 ROUND XA6400 630-1750-12-93C 630-050-MW Call
292755 282cc 66mm +6mm 12.5:1 137 FSR XA6600 630-1650-12-93C 630-050-MW Call 3
300174 282cc 66mm +6mm 13.5:1 139 FSR XA6600 630-1650-12-93C 630-050-MW Call 3


2008-2012 NINJA 250R - 2 Ring
Std Bore: 62mm
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
308452 249cc 62mm STD 13.0:1 NEW Round XA6200 630-1750-12-93C 630-050-MW Call
308453 265cc 64mm +2mm 13.5:1 NEW Round XA6400 630-1750-12-93C 630-050-MW Call


1987 - 1997 NINJA 250R - EX250-F
Piston
Kit #
Disp. Bore
Size
Over
Size
Comp
Ratio
Gram
Wt (g)
Skirt
Style
Ring # Pin # Lock # Gasket # Sleeve # Footnote
317554 249cc 62mm STD 12.0:1 134 Round XA6200 630-1750-12-93C 630-050-MW
317555 249cc 62mm STD 12.5:1 135 Round XA6200 630-1750-12-93C 630-050-MW
317556 249cc 62mm STD 13.0:1 136 Round XA6200 630-1750-12-93C 630-050-MW
317557 265cc 64mm +2mm 12.5:1 148 Round XA6400 630-1750-12-93C 630-050-MW
317558 265cc 64mm +2mm 13.5:1 149 Round XA6400 630-1750-12-93C 630-050-MW
317559 282cc 66mm +6mm 12.5:1 137 Round XA6600 630-1750-12-93C 630-050-MW
317561 282cc 66mm +6mm 13.5:1 139 Round XA6600 630-1750-12-93C 630-050-MW

- 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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