Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black ModelNumber=33388 If you have a 50-55mm

If you have a 50-55mm stroke shock

950mm front/2000mm rear hose length

25 Tire Technology Cross Shield2 Labeled Size 29x2

Forged aluminum lever with cast aluminum clamp

Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black ModelNumber=33388 If you have a 50-55mmDeore XT RD M8100 Rear DerailleurOffers fast and shockless shifting thanks to HYPERGLIDE+ technology The low profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Rear Derailleur Mount Type 10x1 Standard Rear Der Shifter