I actually just got my 1500 contra spring yesterday and I had planned on getting the a12 cam. So maybe ill skip the shaving on the head. Mine came stock with the 58.5mm head on it so i figured the matching bore would be nice. I know alot of people do the larger bores but I really dont want to bore the block. Although 180-190cc's would definitly be sweet. Thanks for the replies. Ill probably get my clutch and cvt back together later today. Then just waiting on my chain to get here. Then ill test it with my Garmin.
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