14 front but running a 42 on the rear so a hair taller than stock.Have the Lectron on it now but still the PT pipe.Seems better but I,m gonna take it down the lane for a rip through the gears tonight after work if I get a chance.I think the tourqey low revs + spinning is likely throwing my butt dyno off.lol...Might even line the 250 up with it and see what happens.