Iso Grips:
Clutch side end cap pops off with a screw driver. The brake side screws off.
Grips come off by inserting a long, thin screw driver under the rubber grip and spraying in A LITTLE hairspray or WD-40. Work grips with both hands by twisting in opposite directions until loose. Don't twist against cables. You'll stretch them and need new ones. Trust me on this one! Clean old glue off with alcohol and sand paper.
Before sliding grips on, pour some glue inside the grips to cover the rubber pads which will contact the handlebar, especially on the clutch side where you have the bare steel bar. The clutch side came loose twice before I figured this out. If you just put glue on the handlebar as the instructions tell you, it gets pushed to the top of the grip as you slide it on and not much is left to glue the grip to the bar. The brake side is not so critical because the glue will adhere to plastic better than steel. Alignment of the rubber pads is a personal preference. I aligned them so they sit in the palm of my hand as shown.