Had a pair on my kfx400. They were great on the choppy areas. But if you do big jump, they will bottom out more than normal. I was going to have them rebuilt for the 450 but I needed the money for other things. You wont be disapointed
i had a set on my 06 400ex and they were worth every penny cant wait to get some fro my kawi i never had any problems bottoming out and they were great everywere i rode from the bumps to the streets also reduced rider fatiuge!