Shimano Deore MT520 12 Spd Crankset Designed to be exceptionally durable for extensive Trail and Enduro riding. That is the FC-MT520 crank from Shimano. With its two-piece construction, the durable 4-arm chainring and a robust steel crankshaft, this versatile crankset offers long-lasting durability and stiffness at an attractive price. In addition, the steel chainring uses Dynamic Chain Engagement+ technology to improve drivetrain efficiency and chain guidance on rough terrain. 2-Piece Crankset | The two-piece construction, in which the right-hand crank arm is firmly connected to the shaft of the bottom bracket, serves to optimize the ratio between stiffness and low weight. In combination with the external bearing, which also results in an increased bottom bracket distance, the power trans