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Stiffen up.

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.

  • Carbon fiber
  • 15mm RockShox Maxle thru-axle
  • Tapered steering tube
  • Compatible with disc brake rotors up to 180mm

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Here's what others have to say...

Unanswered Question

Is this a direct replacement for the Rockshox Reba on my Stumpjumper Carbon HT? Do I need anything else to make the conversion?

Does the RDO fork include the headset? If not what is the part number for this item.

Hey Larry,

This fork does not come with the headset. You will need a tapered 1.125 - 1.5 tapered headset. Just make sure you select the headset that fits the frame you have. Feel free to contact our experts by calling 888-276-7130 or by chatting with them using our live chat feature. They can check into what headset your frame requires and help you find one that works.


B00M, how you like that travel?

  • Familiarity:I've put it through the wringer

Nothing makes me want to stand up and sprint on my hardtail like putting this fork on it. You'll be scared, at first, to ride your newly rigid bike as fast and rough as you did when it had a suspension fork on it, but you'll get over that. You'll flat or crash before anything happens to the fork, which seemed to by my first worry. I think we all forget how well these products are made and how hard you can ride modern equipment. The brake hose routing is nice, too.

Jason, I am a 40yr old cat 1/2 masters xc racer riding a Niner SIR9 with a 100mm Reba fork. Thinking about making a switch to a rigid fork but nervous about the ride, effect on the body etc. Any thoughts or opinions?

Calvin - I don't know where you live, but realistically, your hands and common sense will slow you down before you get too far over your head in the rough stuff. Keep your Reba, but I think you'll enjoy this fork. If you live where it isn't rocky and with long downhills, then it'll be fun, for sure.

Thanks Jason. I live in the Seattle area. Nothing too rocky or long, gnarly descending trails. Sounds like it good be a good fit and fun to change things up a bit.