no idea but its a small shop and they had never even heard of them before. i have no way to work on it myself and just don't want to drive an hour to the next shop to have them put on but i may like i said if i can't get it done i am jsut going to sell them. i think its just more their uncertainty of the parts than anything. you can ask phil these things work on the bike as most of you guys saw in his avatar but my little honda shop just can't do it.