Legend AIR Suspensions systems sets the high mark in ultimate ride quality, Exclusive Aramid Fiber air spring technology provides spring rate adjustability, Air springs maximize wheel travel and adjust to any desired ride height, Fitment accommodates 12" and 13" needs, Easy installation and alignment, provided by spherical bearings on both top and bottom mounting points, Type III hard-coat black anodized machined aluminum bodies, Low friction sealing system and sliding bearings for improved performance and feel, High flow piston reacts quickly for improved fluid flow management, Deflective disc valving self-adjusts to frequency and ensures controlled performance, All the benefits of the standard AIR suspension system, plus six external knob adjustments allow fine-tuning of rebound, Provides optimum rebound performance for any given rider weight, personal ride quality preference, or personal riding style, Light to heavy riders can fine-tune ride preference, Aggressive to casual riding styles can tune to desired quality or personal preference, Includes prewired air compressor with model specific mounting, Complete wire harness installs with three easy Deutsch connections, Includes OEM-looking black handlebar mounted control for easy "on-the-go" adjustability, Optional chrome handlebar mounted control sold separately (Part # 0616-0207), Made by hand in Sturgis, South Dakota, USA