Shimano Cassette CS-RS400-11 11 -speed 11-13-15-17-19-21-23-25-28-32-36T (RD-U6040/R4000 only)
 
The 11-36T 11-speed cassette offers a wide gear range of 327%. From sprinting on the flats to tackling steep climbs, you can choose the ideal gear ratio for any situation. Seamlessly compatible with 2x11s SHIMANO road systems, it offers the range and the precision road cyclists deserve
 
Fast shifting performance with HYPERGLIDE technology