GUB Mountain Bike Flywheel Light Weight Hollow Design Effective Speed Change Bicycle Gear

Feature: 1. High tensile steel plate with nickel and chrome plating, hollow design, lightweight design concept. 2. High quality tension steel plate, quenching process, tempering and hardening treatment. 3. The hollow design can easily reduce the weight and reduce the burden of riding. 4. Flywheels are scattered all over the mud holes, effectively changing speed, and achieving a good balance between strength and weight. 5. This flywheel is easy to install and use, and is an ideal choice for reducing the weight of a bicycle. Specification: Item Type: Bicycle Flywheel Speed: 9 Speed Material: High Tension Steel Plate Number of Teeth: 11T 42T Gear Ratio: 11 13 16 20 24 28 32 36 42T Color: Nickel Chrome Silver. Package List: 1 x Bicycle Flywheel