Another dumb a$$ jetting question

xr650r uncorked w/ a t4 slip on exhaust what main i live in vegas at app. 1500 ft i have a 175 in now and just put the pipe on like 30 minutes ago just want som opinions.

thanks Mike

A 175 main is a good starting point to work from. If you're running the stock 65s pilot, consider trying a 68s.

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