SRAM X5 Medium Cage 9 Speed Rear Derailleur BSS-000237 Same look but noticeable reduction

Same look but noticeable reduction in required locking force of the suction cup

They're well known for manufacturing quality

One-piece machined steel X-DOME design for weight savings

Upper Construction: One-piece Synchwire upper with thermo-bonded exo-structure

Dedicated tool pockets

SRAM X5 Medium Cage 9 Speed Rear Derailleur BSS-000237 Same look but noticeable reductionAbout SRAM X5 Medium Cage 9 Speed Rear Derailleur Leveraging the legendary history of SRAM shifting, the X5 rear derailleur provides incredible shifting speed and precision EXACT ACTUATION technology eliminates slop and shifting variation. Features DIRECT ROUTE technology for lighter effort shifting 34 tooth cassette compatibility Technology 1: 1: 1: 1 Actuation is superior by design. Every unit of cable you pull moves the derailleur the same amount.