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    AIR 9

    Durable, affordable, aluminum

    To AIR 9 is human

    An aluminum hardtail with the DNA of a trail bike

    If a cross-country race bike met a rugged trail bike in the woods, their love child might look a lot like our AIR 9 aluminum hardtail. This bike blends the agility and efficiency of a pedal-friendly XC bike with the versatility, toughness and capability of a rowdy trail rig.

    Versatility x durability = maximum fun factor

    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, we keep the excellent qualities of Niner's 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 our [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.

    Run it geared. Run it singlespeed. Comfortable enough for all day riding and quick enough to pin it at the races, the new AIR 9 handles what you throw at it. Genetically engineered? Maybe not. But it sure is fun to ride.

    Not just any old aluminum

    This modern metal alloy is tried and true. We’ve been working with aluminum and other alloys for more than a decade, and we’re proud of our 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.

    “Trail country” geometry

    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 pedaling 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 centered over the BB for climbing and pairs nicely with the short 430mm chainstay length for supreme pedaling 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.

    Tire clearance

    Need room to roam? We got it. The AIR 9 has clearance to run your choice of 29er or 27.5+ wheels and tires. 

    Lifetime warranty

    Ride, race, rally. We have you covered with warranty service, small parts, and a support team that actually answers the phone. Read More

    Biocentric 30

    Do you yearn for simplicity? Our patented BioCentric bottom bracket system gives you the freedom to easily go single-speed or geared. Read More

    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. 

    Specifications

    Hit the trail without a hit to your wallet. Thanks to SRAM’s outstanding NX Eagle drivetrain, we can bring every ounce of AIR 9 performance to an affordable price level.   

    • Rockshox Judy Gold RL Solo Air suspension fork, 120mm
    • Race Face bar and stem
    • SRAM NX Eagle drivetrain
    • SRAM Level brakes
    • Niner alloy wheels, Boost spacing, 29 or 27.5+. 
    Available frame sizesXS, S, M, L, XLAvailable colorsBlack/Neon Blue
    FrameNiner hydroformed and welded aluminumForkROCKSHOX JUDY GOLD RL SOLO AIR, 120MM, 110X15MM, 51MM OFFSET
    ShockN/ATubes / SealantSTANS NO TUBES SEALANT (2 X 2oz BOTTLES)
    Front wheelNINER ALLOY, 110X15MM FRONT, NINER GRPHICRear wheelNINER ALLOY, 148X12MM REAR, NINER GRAPHIC
    Front TireMAXXIS MINION DHF 3C/EXO/TR 29x 2.5 WT; or MAXXIS REKON+ DC/EXO/TR 27.5x2.8Rear tireMAXXIS REKON 3C/EXO/TR 29x2.4 WT, or MAXXIS REKON+ DC/EXO/TR 27.5x2.8 REAR
    BrakesSRAM LEVELBrake leversSRAM LEVEL
    Brake rotors180/160MM SRAM G2CS ROTORSChainSRAM NX EAGLE 12SP
    Front shifterN/ARear shifterSRAM NX EAGLE 12SP
    Front derailleurN/ARear derailleurSRAM NX EAGLE 12SP
    CassetteSRAM PG 1230 11-50TCranksetSRAM NX EAGLE DUB 32T
    Bottom bracketSRAM DUB PF30SaddleNINER CUSTOM TR WITH CR-MO RAILS, PRINTED NINER GRAPHIC
    SeatpostNINER ALLOY SEAT POST, 370MM, NINER GRAPHICHandlebarRACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP
    StemRACE FACE AEFFECT R 40MM, 35MM CLAMPHeadsetNINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40
    GripsNINER GRRRIPS L/O NYLON FLANGEDApproximate weight28.3 lbs / 12kg

    Build it your way with the AIR 9 frame-only option. The aluminum frame is ready for the best parts you can hang on it. Nearly any drivetrain you can imagine is within reach, and Boost hub spacing gives you freedom for all the wheel and tire options you could want.

    • 6061 Aluminum, can fit 29x2.4” or 27.5x3.0” tires.
    • Seatpost size 30.9 (34.9 seat collar)
    • BioCentric 30 compatible
    • 1.125 x 1.5” zero stack headset (ZS44/28.6 ZS56/40)
    • 73mm PF30 BB shell
    Available frame sizesXS, S, M, L, XLAvailable colorsBlack/neon blue
    FrameNiner hydroformed and welded aluminum