MTB 11/12 Speed SRAM XD Cassette Sprocket 

Compatible :Sram XD

 

 

Specification: 

 

11s 9-42T Silver : 9-11-13-15-18-21-24-28-32-36-42 about 438g

 

12s 9-50T Black : 9-11-13-15-18-22-24-28-32-36-42-50  about 537g

 

12s 10-52T Black : 10-12-14-16-18-21-24-28-32-36-42-52T  about 545g 

 

 

 

1-11 teeth Ultra high strength steel, hardness 680HV 12 teeth 7075 aluminum alloy, hardness 170HV