I looked into it, it depends on what is important to you. If you want adjustability...fine, if you just want to achieve the height than it is much cheaper to go to a simple riser, I put a 4" on my 07 m1000 with a little rerouting of the throttle cable and some minor adjustments to my brake cable it was a piece of cake. If you want the adjustment then I think all of the parts are less than $300.00 and an afternoon of work in the garage will get er done!