Lightweight, snappy, efficient and fast—Niner covered all the bases with their Air 9 frame. Blending lightweight, custom hydroformed aluminum with Niner's well-proven geometry, the Air 9 is an agile ripper that begs to be ridden hard over both the long and short haul. A tapered head tube gives it laser-esque steering precision so when you haul into the next corner there's no unwanted flex. Plus, the Air 9 features S-bend chain and seatstays that are shaped for maximum vertical compliance and efficiency-boosting horizontal stiffness. The S-bend stays allow room for big tires, too.