ZETA rides dirt bikes. ZETA develops products for dirt bikes. They test, manufacture and supply high-quality products for dirt bike riders. Their product ideas come from their riding experience, from professional riders and from MX factory teams. You must not miss ZETA products for your ride! Adjustable seat height by rotating the cam adjustment to change link rod length. About +5 mm ~ -25 mm - varies by model. Five (5) clips to lower, a Standard position and one (1) clip to lift up - total seven (7) clips range adjustment. Bolt-on design, pre-installed bearings and dust seal, only changing a stock link rod. Made of 7000 grade CNC machined aluminum with anodized finish and ZETA laser printed logo.