Don't you guys ever read your factory shop manual?
Unload tension on the bars by backing off the tension bolts. Remove the snap ring in the rear, and use a tool as shown in the picture. I made mine, just used a short length of heavy angle iron, I'd guess about 3/8 x 2 x 4" long or so, and a piece of maybe 3/8 or 1/2 x 2 x 4" long strap iron, just drilled through both for some 1/2" bolts, clamp it on so the "angle" hangs down and you can beat on it, and drive them towards the REAR
You can also buy these "knock off" tools (no pun intended) off ebay
DO NOT be tempted to use pipe wrenches, vice grips, or any other tool of hardware that scratches or gouges up the bars---this will create fracture prone areas