For a Freeride and downhill use. The boost valve technology increases compression damping as the shock compresses, creating a position sensitive shock that allows efficient pedaling, ensures flawless square edge performance and provides gravity defying bottom out resistance. Adjustable spring preload. External coil spring. Internal floating piston. Oil damping nitrogen charged. Speed sensitive shim controlled compression damping. 12 click externally adjustable velocity sensitive rebound damping. Speed sensitive rebound valve stack. Boost valve position sensitive adjustment. Pro pedal adjustment. Bottom-out adjustment.