GUB Mountain Bike 13 Speed Freewheel 11‑50T Black and Silver Bicycle Cassette Flywheel

Feature: 1. The independent flywheel of mountain bike is made of high strength steel plate, and the main shaft is made of aluminum alloy. 2. The surface undergoes anodizing treatment, which obviously improves the corrosion resistance, hardness and wear resistance of the flywheel, making the overall strength of the flywheel higher. 3. The special surface coating can improve the wear resistance of this flywheel and provide protection under various harsh conditions. 4. The hollow design can easily reduce weight, reduce the burden of riding, and achieve a good balance between strength and weight. It is an ideal choice to reduce the weight of the bicycle. 5. This exquisite split structure brings great convenience to future maintenance, and is easy to install and disassemble and convenient to clean. Specification: Item Type: Mountain Bike Cassette Flywheel Color: Black and SilverWeight: Approx. 739g 26.1ozMaterial: High Tensile Steel Plate + Aluminum Frame Gear Ratio: 11 13 15 17 19 21 23 26 28 32 36 42 50T . Package List: 1 x Mountain Bike Cassette Flywheel