Let's face it. The AIR 9, Niner's lightweight aluminum hardtail, has always been capable. So how do you make capable even better? For one thing, Niner keeps the excellent qualities of their tried and true, hydroformed aluminum. Lightweight and snappy, poppy and peppy, the AIR 9 has plenty of stiffness to get you up to speed when you stomp on the pedals.
Next, apply their [R]evolution geometry which puts the rider in the sweet, balanced spot on the bike and the ride experience goes up, way up. Then, add Boost 148 spacing because tire and wheel options are a good thing. Top it off with internal routing for a dropper post and you've made one capable bike even more capable.
This modern metal alloy is tried and true. Niner has been working with aluminum and other alloys for more than a decade, and they are proud of their know-how. The resulting hydroformed AIR 9 frame makes the most of the material properties to blend stiffness and comfort in a durable package.
Fitted with a 120mm fork and with room for oversized, 29x2.4” (or 27.5x3.0”) tires, this bike is fit for any trail. It’s optimized for modern trail riding, long days in the saddle, and all-around good times.
Blurring the lines between modern trail bike geometry and traditional cross-country geometry, the AIR 9 occupies a niche we lovingly call “trail country.” If you’re doing a combination of long pedalling rides, stiff climbs, extended descents, and spicy technical sections, you’ll love what we’ve done here. “Trail country” geometry translates to modern trail manners when you need them most, with no sacrifice of efficiency or agility
The roomy cockpit has a comfortable reach for short stem lengths, giving you quick handling and plenty of maneuverability to blast through rock gardens and cut hard corners. The steep 74-degree seat angle gets you centred over the BB for climbing and pairs nicely with the short 430mm chainstay length for supreme pedalling efficiency.. And of course, the slack, 68-degree head tube angle and long wheelbase contribute stability and self-confidence when you’re dropping into the steepest lines.
ROOM TO ROAM
Need room to roam? Niner has it. The AIR 9 has clearance to run your choice of 29er or 27.5+ wheels and tires.
Do you yearn for simplicity? Niner's patented BioCentric bottom bracket system gives you the freedom to easily go single-speed or geared.
PROTECTION WHERE YOU NEED IT
Factory-installed, integrated frame protection to keep your ride safe from harm, even when you’re in over your head.
HYDROFORMED ALUMINUM FRAME
Welded, hydroformed aluminum yields a strong, lightweight frame with tube shapes for optimized ride quality.
Looking for the perfect size? Check out our handy quick reference chart below (NOTE: The chart assumes average limb and torso proportions). Not sure about your size? Just send us your measurements using our Bike Sizing form and one of our experts will help you out!
For riders who fall between sizes, Niner recommends sizing down for a more maneuverable ride or sizing up for more stability.
|Rider Height||Frame Size|
|5'0" to 5'5"||XS|
|5'3" to 5'9"||S|
|5'8" to 6'0"||M|
|5'11" to 6'3"||L|
|6'3" to 6'7"||XL|
|Frame||NINER HYDROFORMED AND WELDED 6061-T6 ALUMINUM|
|Fork||MARZOCCHI BOMBER Z2 RAIL, 120MM, 110X15MM, 44MM OFFSET|
|Tubes/Sealant||STANS NO TUBES SEALANT (2 X 2OZ BOTTLES)|
|Front-wheel||NINER ALLOY, 30MM INTERNAL, 110X15MM|
|Rear-wheel||NINER ALLOY, 30MM INTERNAL, 148X12MM|
|Front Tire||SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6|
|Rear Tire||SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35|
|Brake levers||SRAM LEVEL|
|Brake rotors||180/160MM SRAM G2CS ROTORS|
|Chain||SRAM SX EAGLE 12SP|
|Rear shifter||SRAM SX EAGLE 12SP|
|Rear derailleur||SRAM SX EAGLE 12SP|
|Cassette||SRAM PG1210 11-50T|
|Crankset||SRAM X1 1K EAGLE DUB, 32 T|
|Bottom bracket||SRAM DUB PF30|
|Saddle||NINER CUSTOM WITH CR-MO RAILS, EMBOSSED NINER GRAPHIC|
|Seatpost||NINER ALLOY SEAT POST, 370MM, NINER GRAPHIC|
|Handlebar||RACE FACE AFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP|
|Stem||RACE FACE AFFECT R 40MM, 35MM CLAMP|
|Headset||NINER INTEGRATED SHIS DESCRIPTION IS42/28.6|IS52/40|
|Grips||NINER GRRRIPS L/O NYLON SOFT COMPOUND|
|Approximate weight||24.9 LBS|
|Top Tube Length||570||585||603||627||652|
|Head Tube Angle||68°||68°||68°||68°||68°|
|Head Tube Length||100||100||110||125||145|
|Seat Tube Angle||74°||74°||74°||74°||74°|
|Seat Tube Length||356||394||419||483||533|
|Bottom Bracket Drop||52||52||52||52||52|
We're an authorized Niner dealer, which means that every bike we sell is backed by Niner's warranty, including a one-year complete bike warranty and a lifetime frame warranty. For full details, click here.