XLC Chain tensioner CR-A03 Fastening at the derailleur hanger For single speed hubs, 16-20 teeth, C-C 68 mm, not suited to coaster hubs Item no. 2501106000
XLC Chain tensioner CR-A04 Fastening at the derailleur hanger For single speed hubs, 16-20 teeth, C-C 68 mm, not suited to coaster hubs Item no. 2501106100
XLC Chain tensioner CR-A06 Fastening at the derailleur hanger For single speed, 12-13 teeth, C-C 34 mm Item no. 2501106300