Enhance your cycling experience with this premium Mountain Bicycle Seat Rod featuring a new spring suspension design with internal shock absorption for superior riding comfort. Crafted from high-quality aluminum alloy, this seat tube offers exceptional durability, wear resistance, and corrosion protection, ensuring long-lasting performance on all terrains. The innovative micro-adjustment screws located underneath the seat tube allow precise control of stroke rebound velocity, enabling you to customize the suspension to your preferred riding style. Easy to install without the need for complex tools or procedures, this seat rod is an ideal upgrade for mountain bikes, road bikes, and more. Key Features: · New Spring Suspension with Internal Shock Mode: Provides enhanced shock absorption for a smoother, more comfortable ride over rough surfaces. · Durable Aluminum Alloy Construction: Solid, wear-resistant, and corrosion-resistant material guarantees strength and longevity. · Micro-Adjustable Stroke Rebound Velocity: Fine-tune the suspension response with convenient screws located beneath the seat tube for optimal comfort and control. · Easy Installation: Designed for quick and hassle-free setup without complicated operations or special tools. · Versatile Compatibility: Perfectly fits mountain bikes, road bikes, and other bicycle types requiring a suspension seat post. Specifications: · Item Type: Mountain Bicycle Seat Rod · Material: Aluminum Alloy · Length: Approx. 350mm (13.78 inches) · Caliber Options:  - 27.2mm (1.07 inches)  - 31.6mm (1.24 inches)  - 27.2mm (1.07 inches) Package Includes: · 1 x Mountain Bicycle Seat Rod Upgrade your bike with this reliable and comfortable suspension seat rod, designed to absorb shocks effectively while maintaining durability and ease of use. Ideal for cyclists seeking enhanced comfort and performance on varied riding conditions.