roost
Well-Known Member
HI, just purchased lifan 125 engine(1P54FMI) and have big problem the front sprocket has different pitch to most pit bikes(thumpstar ,pitboss, orion, provert ,atomic ,ect.), and i can not change sprocket as it has different size output shaft(larger) than bikes above. I think most pit bikes have 420 pitch, could this be 428 pitch and if so can i get a rear sprocket with this pitch .Has anyone else had this problem? if any one could help as i have just spent $$$$ doing custom build up please help,thanks