Shimano Dyna-Sys 11 Speed Jockey Wheel Set - Premium Grade - XTR Level PDP|Colour A secondary chamber can be

A secondary chamber can be manually pressurized and the stainless steel foot-lever releases the compressed air

6 cm (size 6)

Micro Drive 500XL

12-point box and an open end

Shimano Dyna-Sys 11 Speed Jockey Wheel Set - Premium Grade - XTR Level PDP|Colour A secondary chamber can beShimano make 3 different quality levels of jockey wheels to suit their 11 speed derailleurs. They are all cross compatible, so you can "upgrade" your SLX or XT 11 speed derailleur by adding Premium Grade XTR wheels if you like! At the top of the tree is the Premium Grade XTR Jockey Wheels. These are the same as the orignal jockey wheels found on 9000 or 9020 series derailleurs. They feature exceptionally well sealed cartridge bearings, a mud shedding