Coil shock performance with RAMP Tube Technology to offer the mid-stroke and bottom out support of an air shock. Tigon&';s RAMP Tube is a small air spring that works in conjunction with its main coil spring to control the shock&';s progression. With this added feature, a rider will still rely on the main coil to support their body weight while setting sag - but can easily add up to 35% progression relative to a traditional coil shock. Significantly increased strength due to the bracing provided by RAMP Tube TECH SPECS Damping Twin Tube Damping Adjustments Four-way independent Eye-To-Eye 210x50 Primary Color Black Spring Adjustments Preload Air pressure Spring Type Coil Shaft Eyelet Standard Body Eyelet Standard