- Material: Constructed from high-strength aluminum and magnesium alloys, this product is corrosion-resistant, sturdy, and built to last, ensuring long-term durability for all your cycling needs. - Size Options: Available in 20-inch and 26-inch sizes to accommodate various bike models. Key measurements include a top tube length of 270 mm, inner tube dimensions of 160 mm x 34 mm, and a quick-release (QR) size of 9 x 135 mm for easy installation. - Specifications: Features a straight tube with a diameter of 28.6 mm (1-1/8 inch) and a manual lock for secure adjustments. Easily modify the setup to suit different road conditions at any time. - Enhanced Comfort: The hydraulic spring structure with a quick-release function offers a more comfortable riding experience. This feature allows for effortless adjustment while on the go, making your rides smoother and more enjoyable. - Practical Applications: 1. Ideal for commuting to work or school, providing a reliable and comfortable upgrade for your bicycle. 2. Perfect for recreational cyclists looking to enhance their riding experience with improved suspension and adjustability. 3. Suitable for mountain biking, where variable terrain requires frequent adjustments for optimal performance. This product combines functionality, compatibility, and performance, making it an essential addition to your cycling gear.