GUB CS9 Mountain Bike Cassette Flywheel 11-Speed 11-28T Sprocket Bike Flywheel MTB Bicycle Parts

• Made of high quality material, high strength, wear-resistant and durable

• Hollow technology can easily reduce weight and make riding lighter

• Outstanding performance, second to none, to achieve the ultimate riding experience

• It can be easily installed without modifying the rear derailleur

• Recommended to use on mountain bikes

Specifications:

• Model: GUB CS9

• Speed: 9 speed

• Material: high tension steel plate

• Gear Teeth: 11T-42T

• Gear ratio: 11-13-16-20-24-28-32-36-42T

• Net weight: about 506g