Chrome Billet Aluminum Vintage 2" Risers Clamps for 1" Handlebars - Chrome Plated - Classic Motorcycle Harley Chopper Bobber Cafe Racer Get that vintage look for your bobber or chopper build without spending an arm and a leg! CNC machined from 6061 billet aluminum (Sold as a PAIR). Billet risers are then CHROME PLATED . 2" Rise. For use with 1" Handlebars. Threaded for 1/2"-20 riser bolts. Also available in BLACK.