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Item # NNR0015

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  • Graphite, 1.5T, 15QR ($549.00)
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Item # NNR0015


Mountain bikers are quickly learning that traditional quick-release skewers are better suited for barbequing than holding your front wheel on the bike. The same can be said for 1-1/8in head tube standards; they’re great if you plan on riding rail trails, but if you’re a mountain ripper and seek ride-enhancing strength without a weight penalty, a tapered headtube is the way to go. Niner recognized this, so instead of sticking to industry norms, they only offer the no-compromise RDO Fork with a tapered steerer and a 15mm thru-axle.

If you’ve ridden carbon 29er forks, you know the massive torsional load disc brakes and large wheels place on them, along with their propensity to flex when you grab a handful front brake. This causes noticeable wheel deflection, which allows your line to aimlessly wander. It’s not exactly ideal when you’re threading the singletrack needle. Suspension forks have received the benefit of thru-axles, while their rigid siblings were neglected in the background. But not anymore, as Niner has stepped up the rigid game by adding a 15mm Rock Shox Maxle to their flagship rigid.

Up top, Niner developed a tapered carbon steerer tube. Using their monocoque design and lay-up expertise, the oversized steerer tube seamlessly integrates with the lowers. This creates a transition free of stress-prone bonds, as opposed to three-piece forks. Niner dedicated extensive resources to optimizing the fork legs’ weave to take full advantage of the damping characteristics of carbon. Impact energy is dispersed throughout the entire structure, suppressing trail vibrations without compromising steering precision.

The RDO has a 470mm axle to crown length. For comparison’s sake, an 80mm Reba has roughly a 490mm axle to crown length. Factor in 20 percent sag and the Axle to crown is about 474mm. The RDO keeps your geometry in nearly the same place as an 80mm suspension fork. A 45mm offset provides excellent tracking and responsive turn in. The RDO can fit up to a 180mm rotor, and does not have a rider weight limit – reflecting Niners confidence in their quality and design. The Niner RDO Carbon Fork comes in seven colors, and includes the thru-axle.

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

Tech Specs

carbon fiber
Wheel Size:
29 in
Steer Tube Diameter:
1 1/8 - 1 1/2 in
Axle To Crown:
470 mm
45 mm
15 mm thu-axle
Brake Compatibility:
Actual Weight:
Graphite, 1.5T, 15QR: 570g
Recommended Use:
cross country
Manufacturer Warranty:
5 years

View more Rigid Mountain Bike Forks

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Avg. ride time: 1h 53m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

What's the widest tire that this fork can accommodate?

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.

Avg. ride time: 8h 7m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

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.