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  • Niner - Air 9 RDO Mountain Bike Frame - 2016 - Black/Niner Red
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  • Niner - Air 9 RDO Mountain Bike Frame - 2016 - Black/Niner Red

Niner Air 9 RDO Mountain Bike Frame - 2016

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    • Black/Niner Red

    4 Reviews


    Get air.

    If you glance at the specs, you’ll notice that the 2016 Niner Air 9 RDO Mountain Bike Frame is roughly 100 grams lighter than the previous version. This was accomplished using Niner’s Carbon Compaction System (CCS). This process allows the Niner engineers to create tubing that is near perfect in shape and wall thickness, without wasted carbon or resin build-up. Without the cushiness of a rear shock, Niner went to town to design a frame that not only dampens vibration and minimizes chatter, but also moves impact forces to the larger and stronger areas of the frame so you can take a hit from rougher trails. The bottom bracket is designed for a PF30 and your pedal power is transferred to the rear drivetrain via the same chainstays as the previous version. The difference is that Niner has added a 12x142 Maxle to the rear dropouts. The oversized downtube keeps the bike holding tight to the line you choose, and its clearance allows for tires up to 2.4in wide.

    • A race-day rocket in simpleminded pursuit of XC warfare
    • Aggressive geometry for instant responsiveness
    • CCS carbon construction is virtually perfect, inside and out
    • Drops 100g compared to the previous generation
    • Eats up chatter and reroutes impacts into stronger sections
    • Power-first BB junction for mash-happy days on singletrack
    • Maxle rear axle bumps up stiffness while you bump up climbs
    • Compatible with Di2 and mechanical groupsets
    • Item #NNR001X

    Tech Specs

    Frame Material
    carbon fiber
    Head Tube Diameter
    Headset Included
    yes, Cane Creek
    Bottom Bracket Type
    73 mm PF30
    Cable Routing
    Front Derailleur Mount
    34.9mm high clamp
    Derailleur Pull
    Seatpost Diameter
    31.6 mm
    Seat Collar
    34.9 mm included
    Rear Axle
    12 x 142mm
    Claimed Weight
    [medium] 1,060 g
    Recommended Use
    cross country
    Manufacturer Warranty
    5 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Niner Air RDO

    • Familiarity: I've put it through the wringer

    I got this frame from Competitive Cyclist and built it up with SRAM crankset, cassette and shifter. The fork was the new Fox 34 Factory Series. The bike was fast and the Fox fork was awesome. The bike was light.

    Niner Air RDO

    Perfect Bike

    • Familiarity: I've put it through the wringer

    This geometry of this bike is perfect. The bike is so light and fast! This is the bike that I want to still be riding decades from now. It feels natural. This bike will take you to the next level of riding. It is so much fun!

    Category Defining Performance

    • Familiarity: I've put it through the wringer

    A hardtail should be fast and playful; there's a reason to go without rear suspension, and that is for more speed! The Air 9 for a long time has been one of the best hardtails out there, and the RDO continues this pedigree as not only an incredibly responsive ride, but also with reasonable compliance, and plenty of maneuverability.

    While I won't take quite the same lines as my full suspension or trail bikes on the Air 9; I am still more than willing to conquer the same terrain with confidence, while making up the time difference on the climbs and flats.

    If you are looking for a hardtail that defines the category, look no further!

    For additional information, please feel free to reach out to me directly.

    Bradley Gehrig
    Customer Account Manager
    Office: 801–204-4541

    Air 9 Single Speed with Enve

    This is one great option for building up this frame!

    Air 9 Single Speed with Enve

    Coming in under 16.5 lbs, this build made me re-think what I thought I knew about 29’ers and what they could be (i.e. best and fastest in a straight line, slow off the line acceleration, often sluggish in handling even if stable). This Niner is amazingly light, totally responsive, super fast, and comfortable even as a hardtail without fork shocks. Acceleration off the line or ability to have punch/speed or change direction in technical terrain is incredible. I have not been on my other bikes in weeks. This build is a Niner Air 9 RDO (2016), most everything else ENVE components (except for: Race Face Next GL G4 crank, Fabric Alm saddle, XTR M9000 race brakes, Egg Beater 11 pedals, Formula rotors). It is just amazingly light, totally responsive, and fast. Overall, a bike I only wish I could grow into (at my age, given I’ve been mountain biking for 25 years, the bike will always be better than me….….pure ecstasy to ride…and something I’m trying to do every day since it arrived). Thanks to Virginia and helping with the build!

    PS - call Virginia @ 801-736-6396 extension 4756 (or use the 800 number)...she was super helpful, incredibly responsive, and extremely knowledgable when looking at options for this Niner Air 9 RDO and ENVE custom build. I'll never buy or build another bike without working with her!

    sold on the air 9 RDO

    • Familiarity: I've used it several times

    I ended up buying an Air 9 RDO for myself, and this is my second Niner air 9. I have been sold on them since I first rode them in 2014, ultimately impressed by performance with the price being the final straw. I am from a roadie background so I like to go fast and I like to go up. The Air 9 RDO is so efficient and agile I felt completely at home on the first ride. I set up with X01 and the bike just rips, everyone that has tried mine out has been sold. contact me directly and I can make suggestions or offer help on just the frame or complete to partial builds.

    What all comes in the box with the frame?

    What is the best way to get the Air 9 RDO set up for SS? With the PF30 Biocentric II insert, or with the chain tensioner (as shown below in a photo)??
    Thank you.

    The tensioner will give you more adjustment. On my cross bike with an eccentric bb if I go from a 19t to 18t in the back the cranks will go from the rear position to the front. If I want to go bigger or smaller than those two ill need a different chain. Si it depends on how much you change your gearing.

    What fork size do I need for this frame?

    Hey Aaron - Niner recommends a 100 mm travel fork for this Air 9 RDO frame. Feel free to contact me directly if you are interested in having our Bike Shop install a fork before shipping or if you have any additional questions.

    - Kyle L. - Expert Gearhead - - 801-736-4337

    If I currently ride the Niner Jet9 Carbon in size small and am happy with the fit, does it make sense to buy a size small in the Air9 RDO even though the top tube is longer and more closely resembles that of the XS Jet9?

    I am planning on getting a new frame and swapping the majority of the parts of my Specialized Stumpjumper Sworks 2012.
    Does my BB30 XX1 156Q crankset fits? Can I transform my Roval Carbon Control SL 135mm QR to use a Maxle rear axle?

    Thank you!

    You should be able to run that just fine, there are actually a few options available to run on this frame. I am building one up for myself now so feel free to hit me up directly and I can help you out on it.

    I'm considering the RDO and the aluminum Air 9.. I'm an athletic guy, yet big. 6'4 300lbs... The question is at my size.. Carbon or aluminum? Any weight limits on the frames?

    Would the frame geometry be ok with a 120mm fork travel (rockshox rs1)?

    Hey Eduardo - You could put a 120 mm RockShox RS1 front fork on the Air 9 RDO although Niner builds these up with a 100 mm fork. You will make the head angle a little more slack but I have heard of others doing the same thing on this frame. Feel free to contact me directly and I would be glad to help you custom build this frame into a complete bike.

    - Kyle L. - Expert Gearhead

    If your looking at or have rs1 fork 120mm you can always purchase the inserts to bring to 100mm or smaller 80mm. But Geometry will change quite a bit head tube angle would be my biggest concern. The head tube will have a greater degree of rake slowing steering response yes, but also putting allot of load on the joint, equaling split at head tube possibly. Since they don't spec it for 120mm and it being carbon frame. I wouldn't risk it unless you shrink fork travel to at least 100mm

    I assume this frame pairs w/ a 100 mm fork? Thanks.


    Do you know what BB that I would buy to make this work with a GXP XX1 crank?