【Pro-Grade Materials】 Forged 6061-T6 aluminum crank arms + CNC-machined 7075 aluminum 40T narrow-wide chainring with sandblasted black finish. Rainbow anodized chainring bolts add corrosion resistance and style.
【Precision Chain Control】 36T crown-shaped narrow-wide chainring (3mm thick) delivers exceptional chain retention for 1x systems. Compatible with 8-12 speed chains (optimized for 9-11S). Easily swap to 34T/38T/40T chainrings.
【Complete Kit Ready】 Includes: 170mm crank arms, 24mm chromoly spindle, 40T chainring, chainring bolts (set), M18 crank bolt, and installation tool. No extra parts needed.
【Universal Compatibility】 Fits 68-73mm BB shells (Shimano Hollowtech 2 standard). Compatible with 9/16" pedals and major frame brands (Giant ATX/XTC, Trek, Specialized). Direct mount 3-bolt design for easy upgrades.
【Weight-Optimized Performance】 Total system weight only 680g (chainring: 72g). Hollow forging reduces weight while maintaining stiffness for aggressive trail/enduro riding.