Installed this March 2016. Bought from FTD, and installed 150 link chain, I believe I took 2-3 out. Selling the extensions, by themselves for $125 shipped. Will count links and include the chain for an additional $125. Bike sits at 66-1/2”, with 18/43 sprockets. You’ll need a new rear brake line (longer) but otherwise this will bolt right up. Extremely easy to add 8” to your bike! Also selling rear vortex 56 tooth sprocket, $60 shipped used for 2 runs at the drag strip.