Counterbore aluminum riser bushings fit 39mm narrow glide front ends and replace the stock rubber bushings and washers. Fits 1986-2003 Harley-Davidson Sportster XL and 1984-2016 Harley-Davidson Super Glide FX, FXR and FXD (except for 2008-12 FXDB as they have integrated risers in the top triple tree). Ideal for those who want solid-mounted handlebars or for use with tall handlebars for added rigidity and stability. Featuring a counterbore for your allen cap hardware on the underside resulting in a flush mount, cleaning up the underside of the top triple tree. Made in Ohio, USA.