Most any header pipe that does not tuck in the lower pipe like the the factory header pipe is going to scrape the road before the floorboards in turns. I have raised up the rear of my bike with 13" shocks vs the factory 12" shocks (13" is the standard height for the FL frame we have, StreetGlides come from the factory lowered 1"). I drag the floorboards before anything else (stock header pipe). I have the Harley D shaped extended reach boards which are a forward and slightly higher off the road than stock and no wider. At the point I touch, I'm usually going a little over twice what a corner speed sign says.