Yamaha YZ250 combustion chambers KTM Made in USA with USA
Description
Made in USA with USA sourced materials
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5mm big bore chamber 100+ octane - for use with big bore piston
9cc stock compression
Yamaha YZ250 combustion chambers KTM Made in USA with USAChamber selection: 1999 2022 Y20 22cc Stock compression for the X model Y21 21. 1cc Stock (91+ octane) Y22 20. 1cc (100+ octane) Y23 19. 1cc (105+ octane) 1999 2022 big bore chambers: YZ295 24. 8cc 72mm 93 octane Revised squish clearance . 055" YZ296 24cc 72mm 100 octane Revised squish clearance . 055" 1988 1998 Y30 stock Y31 (95+ octane) Y32 (100+ octane) Y33 (105+ octane)
Exchange/Return Notes
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