Sram X-9 X9 X.9 short-cage rear derailleur; 208g!

SRAM X-9 Long Cage 9-Speed Rear Dearailleur for Parts/Repair

SRAM X9 9spd Speed Short Cage Derailleur MTB Mountain Bike Bicycle

Campagnolo Chorus 10 Speed Rear Derailleur Short Cage - Nice!!

SIMPLEX PRESTIGE REAR DERAILLEUR 5, 6, OR 7 SPEED BLACK FOR PARTS

SRAM GX Type 2 and 2.1 Rear Derailleur 10 Speed Pulley Kit, fits X9 and X7

Shimano Alivio RD-M430 Rear Derailleur Mountain Bike Long Cage 9 Speed c23

Sram X9 10 Speed Rear Derailleur with Clutch