Rock gardens and off-camber roots ask more of a wheel than pedaling on smooth singletrack ever does. The Sector Hydra2 Boost 29in Carbon Wheel holds a 29mm internal profile that keeps the tire's shape stable through hard cornering and braking loads, so the line stays where it's pointed rather than hunting mid-turn. What Our Gearhead(R) Experts Are Saying:"I dropped into a rock garden I usually soft-pedal on stiffer test wheels, and the line I picked at the top held through every hit without kicking sideways."