SunRace CSMZ90 Bicycle 12 Speed MTB Cassette Mountain Bike Sprocket 11-50T Black

Inexpensive, yet lightweight 12-speed cassette from SUNRACE. It is compatible with Shimano's and SRAM's latest 11-speed MTB clutches

The optimized tooth shape in the Fluid Drive Plus design improves the phases of the gear change and ensures smoothness even under load.

Aluminum is used on the upper 2 sprockets of 42-50 teeth

red anodized aluminum, The remaining smaller sprockets are made of steel. Lightweight

Spider not only push the weight but also provide a nice look

11-speed MTB freewheel, Compatibility freewheel: Shimano | SRAM 10-

Grading: 11-13-15-17-19-21-24-28-32-36-42-50

Material 2 large sprocket : Aluminum 7075 T6

Material 10 small pinion : Steel

12 speed wide ratio