GUB CS8 8 Speed 11-40T Bicycle Cassette Mountain Bike Flywheel Bicycle Freewheel Mountain Bike Replacement Accessory

• The material of high tensile steel is made by the technology of quench-temper hardening, which makes it more durable and has extreme resistance to abrasion

• The unique design of the gear sprocket exclusively for mountain bikes provides you a better experience to control the shifter

• We adopted the hollow design to reduce the weight to some extent

• The surface made by the technology of chrome plating makes it hard to rust and provides a long service life

• The surface of silver has a fine appearance and will give you a luxurious feel

Specification:

• Material: Steel 

• Weight: 411g 

Notes: 

We have got the reference description for you, please check the actual need with your bicycle before order this product. 

For your safety, please be careful with special tools when installing. If you can not install it well, please go to a nearby bicycle store for help

If you want to replace a new cassette, you had better install a suitable chain at the same time, otherwise, the shifting system may cause significant noises and failures in working.