The Campagnolo EKAR Crankset is a lightweight and efficient 1x13-speed crank designed for gravel riding and racing. The 2-piece crank features a strong and durable 630-grade steel alloy crank axle mated to a lightweight carbon fiber spider and unidirectional carbon fiber arm Narrow Q-factor - 145.5mm Chainring featurews a narrow-wide tooth design for efficient drive and maximum chain security Easy access to external crank bearings Easily interchangeable alloy rings - no need to disassemble the crankset Specifications Chainring BCD123Rings42BB IncludedNoDefined ColorCarbonColorCarbonWeight615Pedal Spindle9/16"Number of ChainringsSingleSpindle Interface TypeCampagnolo Ultra-TorqueDrivetrain Speeds13Crank Length (mm)175Crank Intended UseGravel