Castle Nut 43mm UPSD Forks
This is the hard-to-find castle nut that is in the right side fork leg of all OEM 43mm inverted forks as used in XR1200, XL1200CX Roadster, V-Rod, 2016-2017 Breakout, 2018 to present Sport Glide & Fat Bob and 2020 to present Low Rider S & ST.