WTB's Nine Line isn't your typical XC race tire. Oh sure, it's super light at 585 grams. And sure, it rolls ridiculously fast with short, evenly spaced knobs and a fast center section. Where it distinguishes itself is with the legit traction on real trails. So, go ahead, lay off the brakes in the corners, the Nine Line has your back when you're at the front. WTB's TCS tires deliver the ride benefits of tubeless tires with the reduced weight of a non-UST tire, so you get the best of both worlds.