Shimano Altus M2000 9 Speed SGS Rear Derailleur Wheel Size_26" it gives superb support as

it gives superb support as you climb back up

With a high spoke count and large double-sealed cartridge bearings

SRAM Rival 22: Rival Your Limits: The new SRAM Rival 22 groupset delivers immense performance across a broad variety of bikes and disciplines

Matt black anodized finish with Laser etched graphics for excellent durability

Axle length & type: 20mm

Shimano Altus M2000 9 Speed SGS Rear Derailleur Wheel Size_26" it gives superb support asShimano 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