http://www.casporttouring.com/cst/motorcycle/GRIPPUP/GPSMALL.html Because my hands cramp up easily I've added an additional set of grips on top of stock grips on my 2006 TE250, but the Grip Puppies seem like a much more elegant solution to me. I will eventually order a set and try them out, but wanted to let others know. For the record, the thickness of the additional set of grips I used was about 0.2", which was actually a bit too thick. The Grip Puppies are listed as 0.15" which will hopefully be about right. Update: Ok, I've used them for a while and here is what I think, keep in mind the goal was to have physically larger grips because holding my hands around normal size grips gets painful for me after a short time - personal issue that I've seem to have developed over time. These comments are specific to my TR650, which of course is much different than other bikes: Yes - they are larger in diameter, which is good for me. Yes - they reduce what little vibration I have on my TR650 which is a really smooth bike to begin with, and also has bar ends. On road general comment - really nice regardless of what gloves I am wearing Off road: not sure. Seems to depend on what gloves I am wearing. With Mechanix gloves which are already grippy, heat seems to be generated a bit too much. With my Thor MX gloves that I bought many years ago with leather palms, no problem. On road specific comment - and this will sound incredibly lame/silly/weird - they are incredibly helpful in high cross winds. I loathe wind, heights (bridges), and traffic. These grip puppies improved my riding in those, and all other conditions by at least 10x. Even riding in traffic in high wind with massive traffic at high speeds I find tolerable now - before I made every attempt to avoid those situations. Experiments will continue...
I want to specifically point out that I am close to the San Francisco Bay Area - it can get very windy here. Wind may, or may not, be a problem for where you ride.
I am sure if anyone can tell us why they help in the wind, it you Coffee. I always liked larger grips on the street and would also be curious how you ultimately find them for off road use.
I've got Grip Puppies on my Strada. Can't imagine life without the puppies. They help me in traffic too!
My first dirt bike, an old Suzuki DR350, had heated grip elements under oversized grips. They were comfortable for my big hands but when things got bumpy my hands came off the grips a couple of times. It seemed way too dangerous for the kind of riding I was going to do so I changed them to normal grips. Now I get sore hands and fore arms. Maybe these would be the perfect in between size and help with the buzzy nature of the WR300. Thanks, Coffee!