Risers are machined from billet aluminum Fit any handlebars that have a 1" diameter in the clamping area, and have 1-1/4" riser diameter to compliment the style of 1-1/4" diameter handlebars Accepts Buffalo handlebar clamps or OEM-style handlebar clamps with offset mounting holes Pullback risers have 1" of pullback All risers use 1/2"-13 riser bolts; available separately Made in the U.S.A.. BUFFALO 5.5" RISER