Shimano XTR RD-M9100-GS Rear Derailleur - 12 Speed Medium Cage Gray With Clutch CheckoutTitle=Surly Ultra New Non-Disc Front Hub - QR x 100mm }Schwalbe Marathon Efficiency Tire -

}Schwalbe Marathon Efficiency Tire - 700 x 50 / 28 x 2 Clincher Folding Black/Reflective Evolution Line Super Race Addix Race E-50

Advanced seal system improves prevention of bearing/drive system contamination

}RockShox Rebound Knob Kit - Charger2/2

Integrated Hall Lock Lever stabilizes the rear derailleur to eliminate drivetrain noise

Rim Width (Internal) 22 Defined Color Black Rear Axle QR x 135mm Rear Axle 12mm Thru x 142mm Wheel Size 650b ISO Diameter 584 / 650b / 27

Shimano XTR RD-M9100-GS Rear Derailleur - 12 Speed Medium Cage Gray With Clutch CheckoutTitle=Surly Ultra New Non-Disc Front Hub - QR x 100mm }Schwalbe Marathon Efficiency Tire -Shimano XTR RD M9100 GS Rear Derailleur 12 Speed Medium Cage Gray With Clutch. The Shimano XTR M9100 is designed to withstand full force pedalling on the roughest trails with smooth shifting and exceptional chain stability. It offers enhanced shifting performance a low profile design and low sprocket compatibility. Designed with a Shadow RD+ clutch to reduce chain slap and create a quiet drivetrain with less distraction Decreased rear derailleur