Bicycle hand grips are hard to put on. Often made of rubber or foam rubber, they must cling tightly to the handlebars so they they don't come off while you are riding.
Unfortunately, this makes them hard to put on in the first place. Some people use dish soap, hair spray, or compressed air.
I will teach you how to use zip ties to make this process easier. You will need a small bag of zip ties (about 20), but all but 1 will be reusable after each handgrip.
[If you find this helpful, Vote for me in the Zip Tie Contest!]
Step 1: Prep Handlebar
Step 2: Start Building the Sleeve
Put the zip ties into the loop and have the loose end go over the end of the handlebar.
Step 3: ...All the Way Around
Make sure they are evenly distributed and aren't stacking on one another.
Step 4: Cinch and Shift
Move the loop end of the sleeve to about an inch of the end of the handlebar.
Step 5: ...Then Slip
Step 6: Now Pull!
Stop pulling when the grip is in place. Now would also be a good time to make sure the grip is right-side up. Twist and adjust as needed.
Try to avoid pulling the grip over the zips tie loop.
Step 7: Pull Out and Reuse
Pliers help here.
Step 8: Repeat As Needed and Enjoy
You'll probably have to repeat this one more time. I had to do this 3 more times because I'm fixing a tandem. Total net zip ties used: 4 as the ones I used for the sleeve went right back in my bag.