Use this kit in conjunction with Rinehart's Slimline Duals to get the head pipe on your Trike properly. Don't skimp out on the performance by staying with your stock header and allow for your bike to breathe much better while gaining more torque and ponies.; ; This Trike Conversion Kit allows you to install Slimline Duals on your 2017 - later H-D Tri-Glide and 2015 - later Freewheeler Kit includes left hand adaptor only. Right side OEM adaptor is reused