SRAM GX Eagle DUB Groupset: 170mm Boost 32 Tooth Crank Rear Derailleur 10-50 12-Speed Cassette Trigger Shifter and Chain. SRAM GX Eagle drivetrains are engineered for optimal performance. Eagle drivetrains are designed tested and proven to deliver durable performance for all riders. Eagle technology provides an expanded optimum gear range and is 100-percent compatible with all levels of SRAM Eagle drivetrain systems.

• The GX crankset is engineered for complete chain control with each tooth precisely designed to work seamlessly with the chain’s inner and outer links