New Sram X-9 X9 2/3x10-speed Mountain Groupset Group Set White Lockout Type 2 Derailleur, Crankset, Cassette, Shifters, Chain - Bicycle Derailleur - AliExpress
SRAM Derailleur X9 2 x 10 Low Clamp 31,8 1 3/8in " Bottom " Pull Black Silver | eBay
Sram X9 rear derailleur cage alignment | Mountain Bike Reviews Forum