The NX Eagle drivetrain system brings a wide range of gear choices engineered for simplicity and durability, so riders can focus on what matters most-the ride ahead. German engineered and proudly bearing the SRAM Eagle stamp of approval, designed to be durable enough to withstand the increased demands of E-MTB applications and a perfect solution to heavy-duty use and abuse. Features: The NX crankset and X-Sync 2 chainring were engineered for complete chain control with each tooth shaped precisely to work with the chain&';s inner and outer links The NX derailleur has a been designed for performance and durability Wide 11-50t gear range cassette is compatible with a splined driver body NX Eagle trigger shifter for on-demand gear selection throughout the entire wide range Eagle cassette NX Eagle 12-speed chain for smooth and efficient shifting DUB spindle configuration with direct mount chainring Bottom bracket sold separately