BOLANY Mountain Bike 10 Speed Freewheel Bicycle 11 42T Cassette Flywheel Replacement

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. Provides stable gears and accurate positioning within the range, which is the favorite of cyclists. Specification: Item Type: Cassette FlywheelMaterial: Chromium‑Molybdenum SteelColor: Silver+BlackWeight: Approx. 556.0g 19.6oz Quantity: 1Pcs Specifications: 10 Speed, 11 42T Small Gear: 11T Number of Teeth: 11 13 15 18 21 24 28 32 36 42T Large Gear: 42T 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