Bike Comparison
    SIR 9 27.5+ 4-Star2018 Niner
    Recommended
    MSRP
    $4,950
    Where to Buy
    —
    $1

    At

    Category
    		Trail
    7.6
    Frame
    		Steel
    Fork
    		Fox Factory Float 34
    Wheels
    		Aluminum
    Wheel Size
    		27.5″
    Brakes
    		Hydraulic Disc
    Motor
    Battery
    Groupset
    		X01, X1
    Drivetrain
    		1 × 12
    Suspension
    		Hardtail
    Front Travel
    		120mm
    Brand Site

    ninerbikes.com

    Summary
    		The Niner SIR 9 27.5+ 4-Star is a 27.5″ steel frame hardtail trail bike with ultra high-end components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    SIR 9 27.5+ 4-Star
    Other Trail bikes
    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)

    26 mph

    SIR 9 27.5+ 4-Star

    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 27.5+ 4-Star2018 Niner
    Frame

    Chromoly

    Fork

    FOX 34 Factory Float FIT4, Kashima coating, EVOL air canister, 3-position compression adjustment

    Shock

    N/A

    Bottom Bracket

    Pressfit

    Headset

    Niner headset, zero-stack SHIS, ZS44/28.6, ZS56/40

    Saddle

    Niner Custom TR, carbon-titanium rails, custom Niner graphic

    Seatpost

    KS Lev Integra

    Pedals

    N/A

    Groupset
    Rear Derailleur

    SRAM Eagle X01, 12-speed

    Front Derailleur

    N/A

    Crank

    SRAM X1 Carbon

    Shifters

    SRAM Eagle X01, 12-speed

    Cassette

    SRAM XG-1295, 10-50 tooth

    Chain

    SRAM X01 Eagle, 12-speed

    Chain Guide

    N/A

    Brakes

    Hydraulic Disc

    Wheels
    Rims

    Stan's NoTubes Neo/ZTR Arch Baron

    Front Hub

    Stan's NoTubes Neo/ZTR Arch Baron, 15mm x 110mm, 12mm x 148mm

    Rear Hub

    Stan's NoTubes Neo/ZTR Arch Baron, 15mm x 110mm, 12mm x 148mm

    Tires

    Maxxis Rekon+ 2.8" EXO, dual compound, tubeless ready

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