XC pedal efficiency meets trail-bike descending prowess in Pivot's Mach 4. With this bike there's pure power transfer when you rip on the pedals. Way beyond just efficient, you've got four inches of dw-link suspension when you hit the technical stuff. Whether the trail is a buff rollercoaster or relentlessly difficult, you'll dig the tapered head tube, stout 92mm-wide bottom bracket, and svelte carbon suspension links that boost frame stiffness and enhance cornering precision. All of this with Fox's Float CTD rear shock giving you plush, tunable travel for all your riding and racing needs. This Shimano XTR build leaves very little to be desired: DT Swiss Tricon wheels, carbon bar, WTB saddle, and a 120mm-travel Fox 32 fork.