I received my Maxim Champ not too long ago and had to do something about it's grip. The HDPE polymer was way too slippery.
I liked the X Flock Tubing that came with my Axiom Ocularis, so I went ahead and purchased some.
The X Flock I ordered was sized at 25MM.
The strips for the forks were cut at 1 1/4 inch and the grip strip was cut at 2 1/4 inch.
I didn't have a heat gun, so tried hair dryer at close range, that didn't work. So, I held it over the stove at a medium heat and rotated it which worked out okay.
There was just one area under the forks that might have benefited from a heat gun. I wound up hitting it with a micro torch I had.
The grip strip took a little effort to get on, due to the flare at the bottom of the Champ. But overall, it was a pretty easy install and a huge benefit in grip.