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 TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rings Sold Separately Number of Chainrings No Rings Included Drivetrain Speeds 12 Chainring BCD Direct Mount CINCH Chainline/Hub Compatibility 150/157 DH Hubs Color Black Crank Length (mm) 165 Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Spindle Interface Type RaceFace Cinch 30mm Defined Color Black Crank Length 165Mm Spindle Length 143Mm