I built a set of ape hanger clip ons for a cb750. I used a set of uesd older vortec style clip ons with removable bars that take a straight press fit bar (some clipons use a taipered press fit bar). I then cut a pair of 7/8" ape hangers in half, tripped them to the proper length so they weren't too wide and pressed fit them in. Ever the stickler for safety I ended up drilling and tapping a locating bolt so they couldn't wiggle loose over time (i even tac welded a nut inside the handlebar but you could probably get away with a sunken allen head putting pressure on the bar). I built them for a cb750 project I ended up going a different direction on and they are buried in my garage somewhere. They look so cool I just may use them for something eventually, I built them like that to be adjustable, so you could slide them up and down the forks or drop the forks down without bar clearance issues.