Exactly as the title says. I bought a set of Vodoo 50mm clip-ons for my 954 and installed them. That is when I realized that they do not work well with the 54s if you plan to leave the ram-air ducts in-place as they sit too-low and interfere with steering at lower speeds. Not drilled for the throttle-tube pin yet either. I got them in-place and already knew I messed up with them. They are, I believe, 7-degree zero-rise 50mm clip ons. If you are interested the price is a mere $100 plus post which should still save you some bread.