Gy6 171 big bore jets by: lumberjack - Mar 16, 2022 14:38:54 GMT -5 via mobile lumberjack likes this Back to Home Reply Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by lumberjack on Mar 16, 2022 14:38:54 GMT -5 What size jetting is right with a 26 mm carb, 1" Free flow exhaust,12 cam, high end rear end,nitrous!!