SRAM GX Eagle Boost Crankset 175mm 12 Speed 32t Direct Mount DUB Spindle Interface Lunar 55mm Chainline Rear Shock Service Kits Color Black Rear Der Shifter Compatibility Color Black Rear Der Shifter Compatibility Shimano Mountain Drivetrain Speeds 12 Weight 112 Shifter Style Trigger Chainring bolts not included BB Included No Chainline Hub Compatibility 141 148 Boost Hubs Chainring BCD Direct Mount SRAM Color Lunar Crank Intended Use Mountain Crank Length (mm) 175 Defined Color Gray Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Pedal Spindle 9 16" Rings 32 Spindle Interface Type SRAM DUB SRAM DUB technology creates a lighter stiffer and stronger crankset