i have some of the soyo grips on my lotus...err...the track bars that are usually on my lotus (i swapped them recently) and the only problem that i've had with them is that they are EEEVIL to put on if you don't have compressed air at your disposal. i cut the ends off mine and slide them all the way up to the tops as that's where i do most of my riding. they're not very comfortable or good to ride with in the cold as they're not very thick. but i got used to them...