our seat screw is design to replace the stock seat screw NUT . This nut will thread onto you Carbon fiber rear fender fxlrs fxlrst fxfb fxfbs fxbb r and lock in place. Standard thread size of 1/4x20 .
- Steel Nut
- flange nut w/ loctite
- 1/4x20 Philips head seat screw with star washer