These moto style bars are designed by Forbidden Motorcycles and made by Fly Racing! They feature the moto typical 1-1/8" clamping area but taper down to 1" to accommodate stock Harley hand controls, eliminating the need to sleeve them. They are pre drilled with two 1/2" holes for internal wiring, that have to be lined up with holes in the riser bases to run the wires through. However we highly recommend drilling or slotting one large center hole in the bars underneath if you have alot of wires to run through the bars especially on THROTTLE BY WIRE models (the two small holes are not big enough to run all the wires through). Bars are 32" wide, pullback is 3" and rise is 4.5"