The GRX FC-RX600-1 crankset is designed to cope with different types of terrain and riding styles. They offer a better chain line and more clearance for the rear tire (+2.5mm). The mono version offers a simplified drivetrain (RX800/600 > cassette up to 40 teeth, RX800 > cassette up to 42 teeth) and features an improved tooth profile (Dynamic Chain Engagement) for better chain retention on uneven terrain. Product benefits : These components inherit the Shimano technologies developed for road and MTB drivetrains to deliver smooth, precise shifting. With the GRX range, the result is a smooth, silent drivetrain specially designed for riding gravel. DETAILS : Center distance: 110 mm.Compatible 11 speeds.Aluminum construction.Chain line: 50.1 mmQ-Factor: 151 mm