• REVO coils provide improved plush ride quality, control, and resistance to bottoming-out• Extended coil length has larger "sweet spot" without increasing overall shock• Unique spring rate offers the ability to soften pre-load, reducing ride height and maintaining a smooth ride• Allows minimal pre-load adjustments when changing between riders' weights or loads• Adjusts by hand, no tools needed• 12" in length• Standard duty• Easy installation and alignment, provided by spherical bearings on both top and bottom• Great air suspension for your motorcycle• Backed by lifetime warranty