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2009-2012 CRF 450R

  • Machined from 2618 T6 high tensile forged aluminum

  • Dome features smooth flowing radii and valve pockets designed to work with most performance cams

  • JE Pistons are specifically engineered for extreme applications and used by more top SX/ MX teams than any other piston

  • Pins, pin fitment, lock and rings included
2009-2012 CRF 450R PRO SERIES
Std Bore: 96mm
Piston
Kit #		 Disp. Bore
Size		 Over
Size		 Comp
Ratio		 Gram
Wt (g)		 Skirt
Style		 Ring # Pin # Lock # Gasket # Sleeve # Footnote
284666 449cc 96mm STD 12.5:1 252 FSR ZV9600 748-2050-16-93C 748-050-MW OEM 4
284667 449cc 96mm STD 13.5:1 253 FSR ZV9600 748-2050-16-93C 748-050-MW OEM 4
291513 449cc 96mm STD 14.0:1 256 FSR ZV9600 748-2050-16-93C 748-050-MW OEM 4
284668 468cc 98mm +2mm 12.5:1 260 FSR ZV9800 748-2050-16-93C 748-050-MW Call 4
284669 478cc 99mm +3mm 12.5:1 264 FSR ZV9900 748-2050-16-93C 748-050-MW Call 4
284670 488cc 100mm +4mm 12.5:1 269 FSR ZV10000 748-2050-16-93C 748-050-MW Call 4

- 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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