Product is made better than any other internal throttle out there. However, if I could I would change 2 things. 1) make it longer! No comercial grips fit! It says you have to be 2 sets and use both lefts, no problem, except the gripp is too long (or the throttle is too short). It needs to be lengthened to match what is available. I didn't want to cut mine so I put 3/8 inch washers from tractor supply, the 8.8 ones (they fit just tight enough and are flush to the bottom of the throttle). 2) make the diameter of the insert part a standard size. I am having a huge problem getting it to fit. A 13/16 reamer into the end of the handlebars doesn't make enough room and 7/8" reader would be too much. Here in the U.S.A. we don't have anything in between readily available. Later this evening, I am going to try using a brake cylinder hone after my 13/16 reamer and see if it works. Again, I wouldn't buy any other internal throttle because they are constructed cheaply and this one is solid, I just wish it was a little bit tweaked.