Features of the SRAM XX1 Eagle Carbon Fat Bike 5 Inch DUB Crankset SRAM DUB Technology creates a lighter, stiffer and stronger crankset Carbon-tuned lay-up crank design provides extreme stiffness and light weight Included direct mount X-SYNC 2 chainring provides significantly quieter Performance, with better mud clearing and durability Chainring is designed specifically for Eagle chains and drivetrains DUB compatible bottom bracket sold separately Fat bike frame compatible BB Included, No Number of Chainrings, Chain Retaining Single Chainring BCD, Direct Mount SRAM Crank Length (mm), 170 Chainline/Hub Compatibility, 190/197 Hubs Rings, 30 Crank Intended Use, Mountain Defined Color, Black Drivetrain Speeds, 10 Color, Black Spindle Interface Type, SRAM DUB