SRAM's GX Eagle drivetrain answers the 12-speed's need for excellent performance at a lower price-point, with only a 14 gram weight gain from X01 Eagle. The GX derailleur is the next evolution of SRAM's proven, 1x-specific X-HORIZON™ design. The 14-tooth X-SYNC lower pulley allows 10- to 50-tooth cassette capacity in this relatively compact design, and also adds to GX Eagle’s overall smooth-pedaling feel. A new Type-3 roller bearing clutch features a smoother torque curve for a quieter, more consistent operation and feel. The Cage Lock button has been moved back and out of the way, protecting it from trail debris. A redesigned, robust mounting system further improves the GX Eagle derailleur’s performance and overall durability.