Dylan227
01-30-2010, 04:43 PM
I am building a 90 mod for the 2010 season and I have a few questions.Ok so Its a 1998 yamaha blaster frame and I have a yz 80 motor on the way.Im getting an fmf sst and powercore 2 silencer. Do I have to do any special modifacations for the pipe fit? I alrready know I have to make brackets for the motor to fit. Also what Kind of air filter do you bolt right uo to the carberautor?Also Should I bore it to a direct 90 or leave it a 80?