Suitable for high-performance mountain bikes, with 2.1 inch tire; forged aluminum crown + magnesium alloy lower leg, diameter 32mm, high-strength lightweight aviation-grade aluminum stanchion, newly upgraded air suspension system, bearing-type sliding sleeve, the stanchion is extremely smooth; Optional coil spring suspension fork (using high carbon steel stanchion), optional full-featured; easy to control various complex road conditions, easy to maintain.