SRAM GX Type 2.1 Long Cage 10 Speed Black Rear Derailleur – The Bikesmiths
SRAM GX Drivetrain - Review - Pinkbike
SRAM SRAM, XX1 Rear derailleur, 11sp, Type 2.1, Long cage, Black - SoCal Bike - Oceanside, Carlsbad and north San Diego county's favorite bike shop, Bicycle and ebike rentals, sales, and service
SRAM XX1 Mountain Bike Rear Derailleur Type 2.1 MTB 11 speed Bearing Clutch XO1 | eBay