Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage RDM9100GS

Shimano XTR RD-M9100 12-Speed Rear Derailleur GS Medium Cage A top-of-the-range offering from Shimano, the XTR RD-M9100 12-Speed Rear Derailleur with a GS Medium Cage is the ideal addition to the performance mountain bike, giving outstanding gear shifting and durability through all trail conditions. Featuring a Shadow Plus design format, this rear derailleur possesses a super low profile and is lightweight. The optimally aligned slant angle of the design works in unison with the strong return spring to gift a super light but precise and positive gear shift action. The Shadow Plus configuration also features a stabilising switch that, when enabled, cancels chain bounce over rough terrain to grant more efficient drive and stable gear changes. The pulley cage uses two materials; carbon fibre for the outer plate to save weight and aluminium for the inner plate to increase rigidity and guarantee crisp actuation. This cage houses oversized 13 tooth pulley wheels with sealed bearings that prevent high chain tension in all gear ratios and reduce drivetrain friction markedly. Designed specifically for use with XTR M9100 1 x 12-speed gear setups, this rear derailleur can cope with sprocket sizes of up to 45T and has a capacity of 35 teeth.