Risers - Anti-Vibration - Black Independent left and right risers adapt to any handlebar clamp width, Anti-Vibe design reduces vibration in bars and helps reduce rider fatigue, Dual rotation points allow rider to select optimum riding position for comfort and control, Engineered and tested for maximum strength and durability, CNC-machined from billet 6061-T6 aluminum, Made in the U.S.A., First determine if you have adequate brake line/cable length and stem clamp before installing handlebar risers; longer cables may be required when installing handlebar risers on some models.