A 170 jet is what most of us run, with HMFs (Stock is 162.5). If your running a stock exhaust then use a 162.
The only poroblem w/ not buying a jet kit is your stock needle. The needle in the bike now is not adjustable, like the one's ib the 450's were.
The only poroblem w/ not buying a jet kit is your stock needle. The needle in the bike now is not adjustable, like the one's ib the 450's were.