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 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 an expanded 520% gear range and features SRAM's Full Pin technology, making it both lightweight and durable (Fits SRAM XD Driver body only) The trigger shifter puts total control of your gear selection into the thumb of one hand GX Eagle chain for smooth and efficient shifting Details: Includes: Crankset, shifter, rear derailleur, cassette, and chain Speeds: 12-speed Color: Lunar SRAM DUB Bottom Bracket Sold Separately SRAM GX Eagle DUB Crankset with chainring Hub: 135/142mm, Boost 148mm, Boost Wide 148mm, Superboost+ 157mm, Fat Bike 177mm & 197mm Chainring teeth: 32 (30t for Fat Bike models) SRAM GX Eagle Rear Derailleur: Cage: Long Max Cassette Teeth: 52 Cable Pull Ratio: X-actuation Cage Material: Aluminum Bearing Material: Steel SRAM GX Eagle XG-1275 Cassette: Gear Range: 10-50t or 10-52t Required freehub: SRAM XD Cog Sizes 10-50t: 10,12,14,16,18,21,24,28,32,36,42,50 Cog Sizes 10-52t: 10,12,14,16,18,21,24,28,32,36,42,52 SRAM GX Eagle Trigger Shifter: Shifter Type: Trigger Cable Pull Ratio: X-actuation Cable Length (SL): 2200mm Clamp: Discrete Handlebar clamp included, MMX compatible SRAM GX Eagle 12-Speed Chain: Outer Link Finish: Nickel Color: Silver Inner Link Finish: Black Oxide Chain Connector: PowerLock Chain Length: 126 links Pin: Solid Pin PowerLock Link included **Dub Bottom Bracket not included Compatibility: Chain: 12-speed Eagle chains Bottom Bracket: SRAM DUB bottom brackets Pedal: All 9/16" pedals Compatible Freehub: SRAM XD