A tough, rigid thru axle is just one of the upgrades that Niner offers on its RDO Carbon Rigid Fork, along with a strong, light, and responsive tapered head tube that'll let you rally through trails without worrying about collapsing your fork or feeling out of control. Big wheels, high speeds, and strong disc brakes can combine to tweak flimsy forks out of alignment, which makes it really hard to hold your line while you're riding steep, high speed trails. While suspension forks have been rocking burly thru axles to fight off flex for years, rigid forks are only just catching up. Niner endowed the RDO Carbon with a rugged 15mm RockShox Maxle thru axle to resists these torsional forces, so your wheel will track straighter and you'll be able to hold a reliable line under braking and when you're opening the throttle. The whole RDO Fork is made with Niner's secret sauce carbon fiber, proprietary layups, and tube architecture, so it's light, stiff, and highly responsive. A special carbon weave is designed to maximize carbon's dampening properties, too, so you don't feel like you're getting vibrated to death or bounced around like you're riding a steel fork. At the top, a tapered steering tube integrates seamlessly to provide precise and reliable control with plenty of strength, and its seamless integration reduces stress prone bonds that can squeak, creak, or worse. Indeed, the RDO is burly enough that Niner doesn't even ship it with a weight limit if you can ride it, you can ride it.