SRAM XX1 Eagle Rear Derailleur - 12-Speed Long Cage 52t Max Lunar Model=InSet 2 4 Clamp +/-17 1 1/8"

4 Clamp +/-17 1 1/8" Alloy Black

or if you’re just beginning your road journey

5" Rear Axle 12mm Thru x 148mm Tire Type Tubeless Ready Valve Presta Wheel Size 27

Easy-to-read digital gauge can be attached to a pump or used alone and provides accurate pressure readings up to 300psi / 20

SRAM XX1 Eagle Rear Derailleur - 12-Speed Long Cage 52t Max Lunar Model=InSet 2 4 Clamp +/-17 1 1/8"SRAM XX1 Eagle Rear Derailleur 12 Speed Long Cage 52t Max Lunar. Occupying its rightful place at the top of the Eagle ecosystem the XX1 Eagle rear derailleur gives no compromise racers and dream bike builders a true top tier option. The crisp precise XX1 shifting feel athletes rely on features an updated cage geometry for improved chain management. Type 3 clutch is smoother and more durable 14T lower pulley Includes a chain gap tool that makes it easy