Plenty of bike stuff focuses on doing one thing super well being light, maybe, or being burly, or being affordable. Not enough gear does all three, though, which just makes the Mavic Crossroc WTS 27. 5in Wheelset that much radder. It's not made of the fanciest space agiest materials, but it doesn't have to be. Mavic's S6000 aluminum is tough as nails, and nearly as light as Mavic's proprietary Maxtal. The spokes are made of steel instead of Zicral, the material used in the Crossmax, but together these additions add just a few grams and save you a whole chunk of change. At 19mm, the internal rim width isn't huge, but the narrower rims help keep the weight down so you have less bike to move up the trail. To keep the Crossroc spinning smoothly and pedaling powerfully, Mavic equipped it with its Transfer System 2 hubs. It engages as soon as you pedal, so there's no delay between putting your foot down and accelerating, so to speak, and is compatible with all Shimano drivetrains and SRAM 9 and 10 speed groups an additional kit lets you convert it to run with SRAM 11 speeds. Like all Mavic rims, the Crossroc uses the UST tubeless system so you can ditch the tubes, and the Crossroc comes with Crossroc Roam tires, Mavic's lightest shoe, so you have the perfect combo of grip and easy pedaling.