I have a brand new pair of FI clip ons.. 1 is a 50mm setting and i have a 48mm setting. They are both brand new. the 48mm has scuffs on the ring reason why. Tried to fit them on a 600rr thought it was the right size and when tried to apply would not work. so it was hit with a rubber mallet on one end to try and put it on the fork tubes but would not fit but will still work. i am selling the 50mm for 150 shipped and the 48mm for 110 shipped or both for 230 shipped. Let me know.please check applications for proper fit...