Shimano Altus M2000 9 Speed SGS Rear Derailleur Wheel Size_26" which means you need suspension

which means you need suspension that can handle climbs and descents equally well

Rear axle: 9 x 130mm

Fork Offset: 46mm

For use with Dyna-Sys 11 speed only

Shimano Altus M2000 9 Speed SGS Rear Derailleur Wheel Size_26" which means you need suspensionShimano Altus M2000 9 Speed SGS Rear Derailleur A great value Shimano Altus rear derailleur offering crisp performance on and off road for 9 speed drivetrains. Wide link design increases rigidity and service life 11 tooth pulleys for reduced pulley wear and chain noise Advanced light action design with low friction fluorine coated link pivot bushings Top normal swing design Total capacity 45t Compatible with 32 36t low sprocket Compatible with 9 speed