Enhance your bike’s performance and durability with this high-quality 9-speed Bicycle Flywheel, expertly crafted from premium chromium-molybdenum steel for exceptional strength and long-lasting use. Designed to withstand high temperatures, corrosion, rust, and wear, this flywheel offers strong impact resistance and a precise high-tooth profile, ensuring smooth and reliable gear shifting on both mountain and road bikes. Key Features: · Premium Chromium-Molybdenum Steel Construction: Provides superior durability, wear resistance, and extended service life, making it an ideal replacement accessory for cycling enthusiasts. · Hollowed-Out Lightweight Design: Reduces overall weight while enhancing speed and efficiency, giving your bike a performance boost without compromising strength. · 9-Speed Compatibility with 11-40T Range: Features a versatile 9-speed configuration with teeth counts of 11-13-15-18-21-24-28-34-40T, including a large 40T black tooth segment, allowing smooth transitions across a wide gear range. · Easy Installation: Designed for quick and hassle-free replacement without the need for adjustments, making it convenient for both professional mechanics and DIY cyclists. · High Tooth Profile: Ensures precise engagement and reliable shifting performance under various riding conditions. · Stylish Silver and Black Color Scheme: Adds a modern and sleek aesthetic to your bike, enhancing its overall look while maintaining functionality. Specifications: · Material: Chromium-Molybdenum Steel · Weight: Approx. 468g (16.5oz) · Color: Silver + Black · Speed: 9-Speed · Teeth Number: 11-13-15-18-21-24-28-34-40T · Smallest Tooth: 11T · Largest Tooth (Black Part): 40T Package Includes: · 1 x Bicycle Flywheel Upgrade your cycling experience with this durable and lightweight 9-speed Bicycle Flywheel, engineered to deliver reliable performance, enhanced speed, and long-term durability for mountain and road bike applications.