Day in, day out, this is the Eagle ecosystem at its best. GX Eagle combines the full-featured capability of Eagle technologies, in a group that realizes the potential within every build. This is where you’ll find the best aluminum MTB crankset we make. GX Eagle has its own version of our new, 520-percent range, 10-52t cassette, for more top end speed or a more comfortable climb—should you choose to run it. If not, GX Eagle is backwards compatible, making replacement parts at the ready. Like other Eagle groups, it gets its own group master colorway as part of our new Eagle Colorsystem, allowing for full group or fully curated builds. It’s the simplest, most trouble-free drivetrain system ever made, offering the freedom to mix and match with any component within the expanded Eagle ecosystem. -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 -The GX Eagle rear derailleur gets the job done with an updated cage architecture that improves chain management, and is compatible with both 10-52t and 10-50t cassettes -The XG-1275 10-52t cassette offers expanded 520% gear range, and featuers SRAM's Full Pin technology, making it both lightweight and durable -The trigger shifter puts total control of your gear selection into the thumb of one hand -GX Eagle chain for smooth and efficient shifting -DUB bottom bracket sold separately -Groupset is for standard, non boost 142mm rear spacing