BOLANY Road Bike 9 Speed Freewheel Bicycle 11‑28T Cassette Flywheel Replacement Silver

Feature: 1. The bicycle flywheel is resistant to high temperature, corrosion, rust, deformation, and wear resistance. 2. High durability, strong impact resistance, high‑precise tooth shape, strong compatibility, making riding more possible. 3. The hollow design is adopted, which can increase the speed while reducing the weight. 4. An excellent accessory for mountain bikes and road bikes, easy to install without any adjustments. 5. 9 speed, 11‑13‑15‑17‑19‑21‑23‑25‑28T gears, accurate positioning within the range, which is the favorite of cyclists. Specification: Item Type: Cassette FlywheelMaterial: Chromium‑Molybdenum SteelColor: SilverWeight: Approx. 308.0g 10.9oz Quantity: 1Pcs Specifications: 9 Speed, 11 28T Small Gear: 11T Number of Teeth: 11 13 15 17 19 21 23 25 28T Large Gear: 28T Wide gear ratio mountain bike flywheel, large gear ratio flywheel, for single plate chainring, climbing is more labor saving. Package List: 1 x Cassette Flywheel