Shimano GRX / XT CS-M8000 Cassette
Optimized Rhythm Step gear progression for increased pedaling efficiency throughout the range
Combination of aluminum and steel sprockets saves weight, maximizes durability
Aluminum cassette cog carrier interface prevents freehub gouging on larger cogs and reduces weight
11-40T: 11-13-15-17-19-21-24-27-31-35-40
11-42T: 11-13-15-17-19-21-24-28-32-37-42
11-46T: 11-13-15-17-19-21-24-28-32-37-46