Cannondale's Scalpel-Si Carbon 2 ascends like an angel and descends like a fiend. The super-stiff Ballistec carbon frame and oversize bottom bracket on the Scalpel-Si come into their own when you need to step on the gas. Rocks and roots are no big deal with 100mm of front and rear travel from a RockShox SID World Cup XX fork and Monarch shock. This XC rocket is dressed to the nines with Cannondale CZero carbon rims and tubeless-ready Schwalbe tires that track through buffed singletrack and chunky gnar with aplomb. SRAM's 12-speed Eagle drivetrain and carbon X1 crank ensure flawless shifting, a huge gear range, and instant power transfer. Shimano XT brakes keep the party under control with impressive power and modulation. A carbon handlebar, carbon seatpost, and stem from Cannondale, and a Prologo saddle, round out the contact points. When it's time to cut to the front of the pack, you need a Scalpel.