The Stereo Hybrid ONE77 HPC frame – with 170mm travel front and rear and a mullet wheel set-up with 29in front and 27.5in rear – is all you need for big days out on big mountain trails. We added Internal Cable Routing for super-clean looks, and then threw in an angle-adjustable headset so that you can tweak the handling to your taste. The 800Wh PowerTube battery sits unobtrusively in the carbon down tube, just above the Bosch CX drive. A UDH dropout on the aluminium rear triangle is tough and future-proof, and we also included a Direct Mount chain guide to keep you driving forwards even when the going gets rough.