GMBYLBY Road Bike 9 Speed Cassettes Replacement 11-40T Sprocket Bicycles Cassettes Flywheel For Mountain Bike Cassette

GMBYLBY

The chain guide grooves designs make the shifting more sensitive, and realizes easy, fast and smooth shifting Make of aluminum alloys, light weight and Enduring Suitable for a wide ranges of bikes, including road bikes, mountain bikes, and Road bikes It features a hollows designs, improving drainage, mud dispersion, and heat dissipation Combination Gear: 11-13-16-20-24-28-32-36-40T; Speeds: 9 Speed