Does anyone have more detail on the cylinders that would be used to make these 250's into 380-410cc's? This would be perfect for a sand drag project im working on! Right now im just running the 250 vtwin in my trx250r quad frame and it runs pretty good but it would really shock some banshee owners if I were playing in the same cc range. Are the cylinders mentioned here easily available to the U.S. and were they designed for about the same stroke as the nsr's? Are they a single exhaust port or bridged like the nsr or do they have the auxilary exhaust ports? Maybe if someone could give even a little better description of the bikes these cylinders come from, then I could possibly track down some more info myself. Thanks
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Alex