1.[Efficient Vibration Reduction]High-precision spring, effective shock absorption. Designed for effective vibration reduction, this mountain bike shock absorption stem features a 30mm suspension travel and a 20-degree angle to alleviate arm discomfort and fatigue, especially on rigid forks. 2.[Universal Compatibility]Compatible with Mountain Bikes, Road Bikes, Touring Bikes, and more, thanks to bike shock absorption stem riser 28.6mm front fork diameter and 31.8mm handlebar diameter. 3.[Sturdy, Build]Crafted from rustproof aluminum alloy via CNC forging, this stem is built to last under various conditions, with a length of 110mm and a height of 45mm. This mountain bike shock absorption stem matte texture and enhanced hardness, achieved through an anodized sandblasting process, add style and durability. 4.[Adjustable spring hardness]Adjustable bike shock absorption stem, by turning the screw at the back, the hardness of the spring can be changed to adapt to different bumpy roads. More lightweight, Weighing approximately 440g, this Suspension Handlebar Stem combines comfort, durability, and style, promising a more enjoyable biking experience.