The Stereo Hybrid ONE77 HPC AT is built with big mountains in mind. To that end, we fitted Fox's 38 Factory Grip X2 fork and Float X2 Factory shock – because when you're making full use of 170mm of travel, you need to know you're in good hands. Shimano's XTR Di2 1x12 gears select with uncanny electronic precision, getting your power to the trail with help from Bosch's CX drive, the 800Wh PowerTube battery and a Kiox 400C top tube-mounted display. We added a remote dropper seatpost, while Shimano XTR hydraulic disc brakes with ABS Pro ensure you can safely keep your speed in check. And Newmen Beskar 30 wheels – in mullet configuration – with Schwalbe 2.5in Magic Mary and Albert tyres – keep you rolling, whatever obstacles lie in your path.