Poise and grace aren't typically used to describe a blazing DH run, but one ride aboard Norco's Aurum will have you stoked about the refined composure of this speed fiend's character. 27.5-inch wheels provide a quick and stable foundation, while precision carbon fiber engineering gives the Aurum's frame loads of stiffness for pinpoint control. Norco chose to design the Aurum around the real-world benefits of a 7-speed cassette, using 142mm rear axle spacing to optimize the chainline and increase heel clearance, while keeping tighter gear ratios for race-winning runs. For the Aurum C7.2 you get snappy shifts from the SRAM X0 drivetrain with an 10-24T 7-speed cassette, SRAM Guide RS brakes with 200mm rotors, and a burly Race Face Atlas DH crankset. Schwalbe Magic Mary Super Gravity tires track with confidence, while the DT Swiss EX 512 rims laced to DT 350 hubs reduce wheel flex and boost tire grip. Trail grading duty is assigned to the revered RockShox Boxxer R2C2 Team fork, and the RockShox Vivid RC2C Coil rear shock returns a supple, planted feel and big-hit capability when you need it most.