Niner Bikes Air 9 RDO 29er Hardtail

4.8/5 (5 Reviews)
MSRP : $1049.00


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Product Description

The Air 9 RDO is the quintessential lightweight racing hardtail that has a remarkably compliant ride while maintaining stiffness when you need it most. This carbon hardtail is specifically intended as a geared racing bike. With this in mind we referred to the purposeful lines of the Air 9 Carbon but reduced diameters and trimmed profiles throughout. Even the headset races in the head tube are molded carbon - Niner shaved grams wherever they found them. The net result? A 1125g Niner frame that is going to knock your socks off. That?s over a half-pound less than its brother the Air 9 Carbon! If getting there as quickly as possible is your game, you will want to throw a leg over the Air 9 RDO. Features: -Sizes: S, M, L, XL -Available Colors: Niner Green and Black Licorice -New profiles and carbon layup shave grams wherever possible. -Compatible with a rigid or 80 - 100mm travel suspension forks. -Next generation internal cable routing. -Tapered head tube with FSA sealed cartridge bearing headset included 42mm top and 52mm bottom. -PF30 bottom bracket shell. -Rear Hub Spacing: 135mm x 10mm -Up to 2.4" rear tire clearance. -Precise alloy hardware interface for post mount rear brake mount.

Niner Air 9 RDO Carbon 29er Pro Review

Ahh the carbon 29er hardtail… it is the weapon of choice by every XC racer and Strava KOM hopeful these days. But which one does one choose? What qualities should the rider look for? Niner fired the opening shot in this arena when they launched the Air 9 Carbon a few years ago. Here was a bike with stunning good looks featuring a massive downtube and tubes that were sculpted to look and perform good. It was extremely responsive to power input and it was laterally stiff for even the heaviest riders. Continue reading →



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Reviews 1 - 5 (5 Reviews Total)

User Reviews

Overall Rating:5
Value Rating:5
Submitted by Donovan a Racer

Date Reviewed: July 20, 2013

Strengths:    Light, compliant, great handling and super fast. Best looking 29er out there!

Weaknesses:    None for me

Bottom Line:   
Bought this frame coming from a FS 26 Stumpjumper, first wanted to buy an S-Works Stumpjumper 29er HT but decided against it after test riding the Air 9 RDO, I built mine up with full XTR, Syntace P6 Hiflex seatpost,Stans Arch ZTR rims, Formula R1 brakes,RockShox Reba RLT fork just to name a few parts. This bike is super comfortable and quick even on hairy downhills. It has a slightly taller bottom bracket than the the S-Works SJ and does not get near as much pedal strikes. Bike performs flawless on any type of trail, even handles great around tight switchbacks. Love this bike and it gets a lot of attention on my local trails. Definitely recommend it for anyone looking for a Racing hardtail. Worth all the money!

Expand full review >>

Price Paid:    $6400.00

Similar Products Used:   Specialized Stumpjumper, Santa Cruz High Ball

Bike Setup:   Full XTR drivetrain, Formula R1 Brakes, Stans Arch ZTR wheels, Rockshox Rebal RLT fork, Syntace P6 HiFLex seatpost, Fizik Arione CX carbon rails saddle, Syntace P109 Stem, Niner Carbon Flat top handlebar, ESI chunky grips, Scwalbe Tires

Overall Rating:5
Value Rating:5
Submitted by D Rock a Cross Country Rider

Date Reviewed: April 13, 2013

Strengths:    Its a Niner, everything else

Weaknesses:    None that I've found

Bottom Line:   
This bike is amazing. Mine is a custom build with RDO seatpost and stem, XTR drivetrain and I9 wheelset with Stan's Arch rims. I can't imagine a better hardtail for ANY use. It is super light and stiff for racing but the compliance of the frame and RDO seatpost make it comfortable enough for all day trail riding. I'm 6'2" and with all this hype about 650b, I can't imagine them being better than this bike for a rider my height. It may not be agile enough for some riders but I've always appreciated stability over agility. That being said, I don't find the handling slow (I'm running a 100mm fork) and if I can't negotiate tight corners, It's my fault and not the bike. It may not be cheap but with Niner's excellent customer support, I feel this bike will last a long time, and that's a good thing. This bike has renewed my love of the hardtail.

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Favorite Trail:   anything not paved

Duration Product Used:   1 year

Purchased At:   Pedal... bicycle sho


Overall Rating:5
Value Rating:5
Submitted by Lance Armstrong a Racer

Date Reviewed: February 4, 2013

Strengths:    Incredibly Light, Stiff, Smooth, Compliant. Custom or one of the build options the bike is amazing! The 4 star XO build is by far the cheapest thing out there for everything you get; full XO groupset, AC Race 29'er Wheels and a Fox CTD Kashima fork, the bike not only looks mean, but puts its money where its mouth is. Should be a fast race season with this machine!

Weaknesses:    My personal bike; the 4 star XO build has a Sram 1050 cassette, that's X7 on an XO bike. At least bump it up to an X9! Otherwise for the frame absolutely none.

Bottom Line:   
Overall my RDO has done a wonderful job of turning me into a true believer that Niner is the BEST in the business when it comes to 29'ers. It races up hills like nobody's business and dances across the trail bringing it all together into one unstoppable race machine. The geometry feels perfect when matched with the wide Niner carbon bars, and the weight of this frame is very light at approx. 1100 grams! It absorbs trail chatter without complaint and is super stiff on the climbs, leaving an outstanding feeling that every watt of power is being transferred into forward momentum! Anyone looking to step up their game seriously on the race track or local ride should consider this bike! Be warned: although the carbon is excellent at absorbing trail chatter, it definitely doesn't replace what a full suspension bike can do in terms of long term comfort. If you can handle the rigours that come with ANY AND EVERY hardtail, this is a sweet pick out of the bunch! This bike is truly a Niner masterpiece!

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Duration Product Used:   1 Month

Price Paid:    $4000.00

Purchased At:   Pedal Bicycle Shop

Similar Products Used:   Nothing carbon, but I raced a Cannondale Flash 2 29'er Alloy last season which I had heard had very good 29'er geometry.

Bike Setup:   Full XO, AC Race 29'er Wheels, Fox Float CTD Kashima, Schwalbe Racing RalphTires

Overall Rating:4
Value Rating:4
Submitted by switchbaxr a All Mountain Rider

Date Reviewed: December 19, 2012

Strengths:    Superb styling and craftsmanship. This is the Pininfarina in design of Mountain Bikes.
Stiff, light and nimble.
Handling is precise and dialed.
Climbing is this bike’s forte...PR’s await you on your local climbs.
Adroit on smooth non-techie singletrack and big fireroad climbs.
Did I mention amazing craftsmanship and design? This bike makes you drool just lookin’ at it.


Weaknesses:    
Not rear wheel travel...duh it’s a hardtail! Though this offers a compliant ride for a carbon frame, it’s still too rough on my old body for long trail rides.

Although this 29er was more responsive than I had anticipated, I felt it was still a tad slow on the tight and twisty stuff, perhaps a function of the big wheels and my limited time on the bike.


Bottom Line:   
I had a chance to test ride Niner’s Air 9 RDO and for anyone who wants an all out, simple, super light weight, minimalist and beautifully crafted epic climbing and cross country racing machine, this is your ride.

Get it if:
You’re young, supple and sturdy.
You want to knock minutes off your Strava PR’s for local climbs.
You crave looks and attention of fellow lusting bike aficionados.
You got some $$$ burning a whole in your pocket and you already have an DH rig, All-mountain rig, and a unicycle and you’ve been on the fence about getting a cross bike and can’t come to terms with riding on any tires less than 2.0’s.

Overall Rating:5
Value Rating:5
Submitted by Jon Angelovich a Cross Country Rider

Date Reviewed: November 7, 2012

Strengths:    Light, Compliant, Responsive, high spec build (limited),
Fast, Fast, Fast
Does what you tell it to do
The ability of the bike is far greater than my ability


Weaknesses:    I have not found a weakness yet
As expected, you need to have a decent fitness level to endure the stiffer ride of a hardtail


Bottom Line:   

I purchased this bike in late August (2012) after much research and debate.
At first I wanted a full suspension so i could rip up the technical stuff (and not my body)
Then I wanted a hard tail that would tear up the flats and hills.
Being that I am still young and adventurous I went with the hard tail.

After reading reviews of the AIR9 Carbon and its issues with the bottom bracket, I can say this bike does not experience the same issues. If I pedal, the bike goes, and does so quietly (and with little effort).

This bike is also very compliant. If ridden correctly (to the definition of what i consider correct riding), the bike does not beat you up and I actually end up less sore (in the back, shoulders, etc.) I actually feel like I have rear suspension at times (29 inch wheels help). I was somewhat worried about the ride of a hard tail, but do not regret my decision as I feel I actually force myself to use better technique (for navigation of obstacles).

The geometry is awesome. Even as a taller rider (and higher seat), I never feel in danger of sending myself over the bars. I can descend with confidence, and the bike does not feel like it is taking a bunch of damage.

When you need power, it is there. Sometimes you need a quick surge to navigate an obstacle. If you hit the pedal, you have power. I have never failed on the obstacle because the bike didnt do its job. Sometimes it may do its job too well and get ahead of me.

I have taken the bike on several decent road rides (40+ miles), with steep and long hills. Even with 2.25 Racing Ralphs, the bike glides very nicely.

I am more than satisfied with this bike. I will say that it probably is not for everybody as it begs to go fast, and may get away from you if you dont have the required skill. However, if you have the skill and confidence to push the bike, it will do exactly what you tell it (in my experience). Whether you like to ride on the road, ride smooth trails, or tear up rough singletrack, this bike is more than adequate. It also gets a lot of looks (green).


I could probably ramble on, but its not necessary.

This is an awesome bike, and I would encourage anybody who has the money and is on the fence to go with it. If you are even looking at this bike you have probably ridden a hard tail, so there is no question you will be satisfied.



Expand full review >>

Duration Product Used:   3 Months

Purchased At:   Bicycle Sport Shop S

Bike Setup:   Air 9 RDO limited launch model

Reviews 1 - 5 (5 Reviews Total)

Review Options:  Sorted by Latest Review | Sort by Best Rating


Will the air 9 RDO survive a 5 foot drop?

Hi Guys, As per the topic, i just wanted to see how durable this XC bike is before plunging big money on it. Cheers SaltzRead More »

Niner Air 9 RDO build questions.

Ok so I just bought a 2012 Niner Air 9 RDO frame and I'm sure I'm going to have a bunch of build questions. My first question is about the headset. I see the Niner site sells a Niner brand headset. Which is the one I need for my frame? I'm not sure if it's the Internal Tapered(zero stack) or Integra ... Read More »

Air 9 RDO Build with SRAM XX1

Thought I'd post some pictures of my recently built Niner Air 9 RDO. [ATTACH=CONFIG]806706[/ATTACH] More here: [url=http://www.modeseven.org/?p=125]Niner Air 9 RDO: Pictures | Wheel of Misfortune[/url] Weighs in at around ~18.75lbs. Rides real fast :cool: Could drop a bit more weight ... Read More »

Update: Niner Carbon Air 9 RDO - Open Letter to Niner Bikes

Hey, I purchased one of the limited edition (1st 50) Niner Air Carbon RDO / XTR hardtails last March. I'm a 175 lb xc racer from MI. Great bike however, the 1st frame cracked at 1800mi on the tt in front of the seatube. Niner was good about replacing that frame promptly. After another 2500mi, the ... Read More »

How much fork travel to run on a Air 9 RDO

I recently upgraded to a Air 9 RDO from a older Air 9 aluminum scandium. I have a Fox F29 RLC that is set to 80mm's on it right now that came off my old bike. I am using the bike for short cross country races this season (around 14 miles). I see that the prebuilt RDO's come with the forks set to ... Read More »

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