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Thumper Racing 290 sleeved Big Bore

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On a whim, I wrote to Thumper Racing hoping that they had a big bore kit for the 2011 KXF. The web site did not list one, so I wasn't very confident, but curiosity got the best of me. A few days later, I got an email from them - they just finished testing the steel sleeve big bore setup and it'll be a 290cc and go for $595.

NowI know what I'm getting for Father's Day!

Edited by xplant
tpyo

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