Race Face Evolve Fatbike CranksThe Fatbike Evolve crank is specifically designed for the needs of 1x drivetrains. Built to handle aggressive all-mountain riding while still maintaining an XC level weight, the Evolve crankset makes the perfect upgrade for your fatbike.FeaturesArms are net shape forged from high strength 6066 aluminum to maximize strength to weight ratio.All-Mountain strength at an XC weight.1 x 9,10,11 speed compatibleSPECIFICATIONSCrank Arm Length170 or 175mmBB Spindle Interface24mmCrank Arm Material6066 AluminumBolt Center Diameter (BCD)104mmIntended UseXC, TrailHub Spacing Compatibility190mm | Race Face Evolve Fatbike Cranks 170mm, 190mm spindle, 104 BCD