The NEXT SL 2X10 crank represents the next generation of Race Facecarbon cranks. Weighing in at an astounding 595g including BB, Next SL2X10 cranks are the lightest, strongest 100% carbon fiber MTB cranksever made. Race Face has created a crank that goes beyond existingcarbon material & process limitations, setting a new benchmark inperformance XC components.Race Face NEXT SL cranks are equipped with performance Turbinechainrings. Turbine chainrings are 100% CNC machined in-house from thelongest wearing wearing 7075 aluminum available and are available isthree gear combinations. The composite arms have no internal aluminum spine. Proven assembly friendly “EXI” spline interface ensures fast, simple installation and easy dealer serviceability using standard shop tools. Next SL features a specifically engineered, superlight, CNC machined 6AL-4V Titanium BB spindle that is permanently moulded directly into the drive side crank arm to minimize weight and maximize power transfer. All alloy T-30 Torx hardware keeps weight down and coolness high. Crank bolt puller cap makes crank removal a snap with just an 8mm hex wrench. Bearings feature our new custom triple wiper seal to better retain grease & keep contaminants out. includes Turbine bottom bracket Bearings are factory filled with Phil Wood waterproof grease tested & proven to extend bearing life.