For 2013-down 41mm fork tubes, and 2014-later 49mm fork tubes.  Urethane rings approx. 1/4" height each, fits snugly around tube.  Stack as many as you need to build front end clearance between your lower tree and lower leg.  Easily covered with fork cans.  $67.50pack comes with 30 rings, over 3.5" for each tube.  Or buy individual rings for $2.25 each if you know exactly how many you need.