These risers are are forged from 6061-T6 aluminum for superior strength and offer 1.7 inches of rise. Drilled and tapped for stock 1/2″-13 riser bolts (bolts sold separately). CNC-machined for precision fit on handlebars with a 1 inch diameter clamping area and designed to fit applications with 3.5″ center-to-center mounts, such as all Harley-Davidson motorcycles. These risers accept OEM-style Harley-Davidson top clamps. Sold as a pair.