The Tusk Handlebar Riser Kit makes it easy to increase the handlebar height on your motorcycle or ATV. Tusk handlebar risers are made from tough billet 6061 T-6 aluminum and come with high-grade 12.9 chromoly steel bolts. Tusk makes handlebar risers for both 7/8" and 1 1/8" handlebars. Additionally, risers are available in both 15mm and 30mm heights