Mountain Bike 10 Speed Freewheel Lightweight Bicycle 11‑40T Cassette Flywheel for Mountain Road Bicycle

Feature: 1. The bicycle flywheel is made of high‑strength steel, which has abrasion resistance, durability, high temperature resistance, corrosion resistance, rust resistance, high durability, high precision tooth profile, and toothless design. 2. The special tooth profile and inclination provide fast and accurate indexing conversion function, and the special‑shaped and irregular cut angle tooth profile is compatible with various brands of variable speed chains. 3. The hollow design can easily reduce the weight, reduce the burden of riding, achieve a good balance between strength and weight, easy to install and use, and is an ideal choice for reducing the weight of the bicycle. 4. Easy to install, direct replacement of old or damaged flywheels, excellent accessories for mountain bikes and road bikes, unique mountain bike chain design, can well control the shifting function. 5. Independent small tooth ring, the small teeth of the bicycle cassette flywheel are often used during use, and the independent small tooth design is convenient for future replacement and maintenance. Specification: Item Type: 10 Speed Bicycle Flywheel Material: High Strength Steel Speed: 10 speeds Gear Teeth: 11 13 15 17 21 24 28 32 36 40T. Package List: 1 x Bicycle Flywheel 2 x Gear Ring 1 x Lock Ring