The new cassette Shimano 105 11v uses closer relations developments as Shimano optimize the pace and rhythm control.
     Aluminum spider
     Development: 11/32 only supports changing long box GS
     Measure: 11-12-13-14-16-18-20-22-25-28-32
     11-12-13-14-15-17-19-21-23-25-28
     269 g (11-25)