SRAM X9 AND X-7 Rear Mountain Bike Bicycle Derailleur Long Cage 9 Speed - $49.00 | PicClick
SRAM GX 2X10 Spd Short Cage Rear Derailleur Type 2.1, Fit XX X0 X9 X7 X5 Group - $74.99 | PicClick
SRAM GX 10 Speed Rear Derailleur Short Cage for 1x10 Speed only 36T max Black Trigger Shifter Lever Right Rear Shift Lever|Bicycle Derailleur| - AliExpress