Motorcycle 1" Handlebar Risers For Yamaha V-Star 650 Classic Silverado Road Star 1600/1700 Motorcycle High Quality Chrome Billet Handlebar Risers Min Diameter:3.2cm?Max Diameter:4.9cm?Hole Diameter: 2.5cm (1 inch) Total Height: 5.5 (13.5cm),Height from bottom to center of hole: 9cm ,Pull Back: 1.5 (3.8cm ) Bottom Thread Mount: 0.5 inch Coarse x 13 (13 threads/inch) Bolt Fitment:  All Motorcycles with 2.5cm/ 1" bar diameter  All Harley Davidson ,Cruisers ,Choppers ,Metrics with 2.5cm/ 1" bar diameter All Victory cruisers with 2.5cm/ 1" bar diameter