The RaceFace Turbine crank is designed as the performance-oriented alloy crank for XC trail and enduro applications. As the lightest alloy option in the CINCH lineup the Turbine allows for interchangeable spiders limitless ring combinations a 30mm alloy spindle and compatibility across all relevant frame standards.Aluminum crank arms are deep pocket forged for maximum strength and then CNC machined to shave every unnecessary gram of weight