PhatheadRacing
Yamaha YZ250 combustion chambers
Regular price
$60.00 USD
Regular price
Sale price
$60.00 USD
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Chamber selection:
1999-2022
Y20 - 22cc Stock compression for the X model
Y21 - 21.1cc Stock (95+ octane)
Y22 - 20.1cc (100+ octane)
Y23 - 19.1cc (105+ octane)
1999-2022 big bore chambers:
YZ295 - 72mm 95+ octane
YZ296 72mm 100+ octane
1988-1998
Y31 - Stock
Y32 - (95+ octane)
Y33 - (100+ octane)
