Bicycle 9 Speed Flywheel 11‑50T Card Type Cassette Sprocket Bike Replacement Accessory

Feature: 1. The bicycle flywheel is resistant to high temperature, corrosion, rust, non‑deformation. 2. With higher strength, durability and extremely strong wear resistance. 3. Adopt a hollow design. While reducing weight, it can also increase speed. 4. Easy to install, no adjustment is required, stable gears and accurate positioning are provided within the range. 5. Great accessory for mountain bikes and road bikes, which is the favorite of cyclists. Specification: Item Type: Bike Freewheel Material: Chromium molybdenum steel Color: As Pictures Shown Weight: Approx. 583g 20.6ozSpecifications: 9 speed 11 50T Small teeth: 11 T Teeth: 11 13 16 20 24 30 36 42 50T Black Big Teeth: 50T Wide tooth ratio mountain flywheel, large tooth ratio flywheel, for single tooth disc. It s easier to climb a hill . Package List: 1 x Bike Freewheel