ZTTO 9s Cassette Freewheel 11-40T 9 Speed Flywheel Sprocket Bicycle Parts 11-40t

Description

Made of high tensile material , makes it more WEAR RESISTANT and has extreme resistance to abrasion. The unique design of the gear sprocket exclusively for mountain bike, provides you a better experience to control the shift function. Adopted the hollow design to reduce the weight to some extent. The surface is hard to rust and provides a long service life. And the surface of gold color has a fine appearance and will give you a luxurious feel.