Pro Descender :: Concentrilink™ Suspension The Pro Descender is designed to possess the best performance qualities in all aspects of DH racing, using the most advanced suspension design principles and fabrication techniques. A wide perimeter monocoque structure around the shock maximizes lateral stiffness and achieves the most stable and predictable rear end feel. The tapered cantilever beam swing arm utilizes the Concentrilink suspension design, proven to have superior DH characteristics tracking and braking over any other design.