Bike Comparison
    SIR 9 - 2-Star NX Eagle - 292019 Niner
    Recommended
    MSRP
    $2,600
    Where to Buy
    —
    $1

    At

    Category
    		Trail
    Weight
    		28.0 lbs
    4.9
    Frame
    		Steel
    Fork
    		RockShox Judy Gold RL
    Wheels
    		Aluminum
    Wheel Size
    		27.5″ / 29″
    Brakes
    		Hydraulic Disc
    Motor
    Battery
    Groupset
    		NX Eagle
    Drivetrain
    		1 × 12
    Suspension
    		Hardtail
    Front Travel
    		120mm
    Brand Site

    ninerbikes.com

    Summary
    		The Niner SIR 9 - 2-Star NX Eagle - 29 is a 27.5″ / 29″ steel frame hardtail trail bike with upper mid-range components.
    Similar Bikes
    Accessories
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    25 mph

    SIR 9 - 2-Star NX Eagle - 29

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    SIR 9 - 2-Star NX Eagle - 292019 Niner
    Frame

    Reynolds 853 air hardened steel, welded

    BB Standard: PF30, 73mm, Press Fit

    Tire Clearance: 2.4"

    Fork

    ROCKSHOX JUDY GOLD RL SOLO AIR, 120MM, 110X15MM, 51MM OFFSET

    Shock

    N/A

    Bottom Bracket

    73mm PF30 BB Shell (Adapters Required For BSA Type BBs); compatible with Biocentric 30 BB

    Headset

    NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40

    Stem

    RACE FACE AEFFECT R 40MM, 35MM CLAMP

    Handlebar

    RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP

    Saddle

    NINER CUSTOM TR WITH CR-MO RAILS, PRINTED NINER GRAPHIC

    Seatpost

    NINER ALLOY SEAT POST, 370MM, NINER GRAPHIC

    Grips

    NINER GRRRIPS L/O NYLON FLANGED

    Groupset
    Rear Derailleur

    SRAM NX EAGLE 12SP

    Front Derailleur

    N/A

    Crank

    SRAM NX EAGLE DUB 32T

    Shifters

    SRAM NX EAGLE 12SP

    Cassette

    SRAM PG 1230 11-50T

    Chain

    SRAM NX EAGLE 12SP

    Brakes

    SRAM LEVEL

    Brake Levers

    SRAM LEVEL

    Wheels
    Rims

    Front: NINER ALLOY, 29 or 27.5+, 110X15MM FRONT, NINER GRAPHIC, Rear: NINER ALLOY, 29 or 27.5+,148X12MM REAR, NINER GRAPHIC

    Tires

    Front: MAXXIS MINION DHF 3C/EXO/TR 29x2.5 or REKON+ DC/EXO/TR 27.5x2.8, Rear: MAXXIS REKON 3C/EXO/TR 29x2.4 WT or REKON+ DC/EXO/TR 27.5x2.8

    Disc Rotors

    180/160MM SRAM G2CS ROTORS

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