For 06-17 Dyna ModelsAll the benefits of Legend AIR suspension systems above plus six external knob adjustments allow the fine-tuning of rebound dampingProvides optimum rebound performance for any given rider weight, personal ride-quality preference or personal riding styleLight to heavy riders can fine-tune ride preferenceRiders with aggressive to casual styles can tune to desired quality or personal preferenceOptional chrome handlebar-mounted control sold separately (PART #s 0616-0039 or 0616-0207)Made in the U.S.A.