Beautifully chrome plated 1.75in Upsweep pipes designed to work on Harley Knucklehead big twins. You will need to supply an oem style front headed and squish pipe(HD, Gasbox, VT, Paughco should work) comes with welded on 5/16-18 bosses so you can clamp or weld mounts to your frame for a clean look. I designed these to be as universal as possible but on occasion you may need to do some slight trimming to get them to fit absolutely perfect. works great with our cocktail shaker mufflers. Made in U.S.A.