I have a 2001 cr250. Eddie sanders bottom end and the esr big bore 325 kit on top. Ran it for one or two races that's it. Comes with 2 mikuni pulse pumps, 2 keihin carbs, stock cylinder over bored with brand new matching piston never installed had it just for backup. This motor is fast! Front runner absolutely. Been flawless with my maintenance. Make me an offer I can't refuse. Located in northern California but can ship on your dime.