Race Tech FEGV S3501 Gold Valve Cartridge Fork Emulator Fits: 87-94, 99 FXR, FXLR, FXRSP; 88-Present XL(Except 97-03 XL1200S) (39mm fork) Make damping rod fork perform like well-tuned cartridge fork Tunable valves sit on top of damping rod; held in place by the main spring Typical road race track tests show an improvement of 2 seconds per lap Simple to install and tuneable for all conditions and rider preferencesSold as a kit