With 1.25" clamping area. Perfect to compliment the Trask Performance V-Line handlebars; or any other bar for that matter. Precision machined from billet aluminum with clean cut connector beams between the left & right riser for added strength and torque resistance without the bulk. The open design provides the sharp; clean looks to your bike for the sophisticated killer look; still providing a high strength riser set-up for any height or width bar. Riser mount holes come with the stock H-D 3.5" center to center spacing. Re-use OEM 1/2-13 threaded riser bolts. Note: Higher than stock risers may require longer than stock wiring.