Bike Comparison
    MSRP
    $2,010$4,000
    Where to Buy
    $1

    At

    $1

    At

    Category
    TrailCrosscountry
    Weight
    28.0 lbs
    4.8
    6.2
    AluminumCarbon
    Fork
    RockShox Recon Silver RLRockShox Reba
    Shock
    X-FusionRockShox Deluxe Select+
    Wheels
    AluminumAluminum
    29″29″
    Brakes
    Hydraulic DiscHydraulic Disc
    Groupset
    SX EagleNX Eagle, SRAM
    Drivetrain
    1 × 121 × 12
    Suspension
    FullFull
    Front Travel
    130mm120mm
    Rear Travel
    120mm110mm
    Brand Site

    specialized.com

    specialized.com

    Summary
    The Specialized Stumpjumper ST Alloy 29 is a 29″ aluminum frame full suspension trail bike with upper mid-range components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    2020 Stumpjumper ST Alloy 29
    2023 Epic EVO
    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)

    24 mph

    2020 Stumpjumper ST Alloy 29

    25 mph

    2023 Epic EVO

    Highest gear

    (descending)

    Spec Level

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

    Geometry
    Specs
    Frame

    M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel

    BB StandardBSA, 73mm, Threaded

    FACT 11m Full Carbon, Progressive XC Geometry, Rider-First Engineered™, threaded BB, 12x148mm rear spacing, internal cable routing, 110mm of travel

    BB StandardBSA, 73mm, Threaded

    Fork

    RockShox Recon RL, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel

    Travel120mm

    Spring TypeAir

    RockShox Reba RL, Motion Control damper, Solo Air, 42mm offset, 15x110mm thru-axle, 120mm of travel

    Travel120mm

    Spring TypeAir

    Shock

    X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm

    RockShox DELUXE Select+, Rx XC Tune, Two Position, Rebound Adjust, 190x40mm

    Bottom Bracket

    SRAM Powerspline

    SRAM DUB, BSA 73mm, Threaded

    Stem

    Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

    Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

    Handlebar

    Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,

    Specialized Alloy, 20mm rise, 31.8mm, 760mm wide

    Saddle

    Body Geometry Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails

    Body Geometry Power Sport, steel rails

    Seatpost

    TransX dropper, 34.9mm, S: 125mm, M/L/XL: 150mm Travel

    TranzX Dropper, 30.9mm, XS-SM: 100mm, M: 125mm, L-XL: 150mm

    Grips

    Specialized Sip Grip, half-waffle, slip-on

    Groupset
    Rear Derailleur

    SRAM SX Eagle, 12-speed

    SRAM NX Eagle, 12-speed

    Crank

    SRAM SX Eagle, Powerspline, 170mm, Steel, 30T

    SRAM X1000 Eagle, DUB, 170/175mm 32T, 32T

    Shifters

    SRAM SX Eagle, trigger, 12-speed

    SRAM NX Eagle, trigger, 12-speed

    Cassette

    SRAM PG-1210 Eagle, 11-50t

    SRAM NX Eagle, 12-speed, 11-50t

    Chain

    SRAM SX Eagle, 12-speed

    SRAM SX Eagle, 12-speed

    Brakes

    Front: Tektro Gemini Comp, hydraulic disc, resin pad, 200mm, Rear: Tektro Gemini Comp, hydraulic disc, resin pad, 180mm

    Front: SRAM Level T hydraulic disc, 2-Piston Caliper, 180mm rotor, Rear: SRAM Level T hydraulic disc, 2-Piston Caliper, 180mm rotor

    Wheels
    Rims

    Double-wall alloy, 27mm internal width

    Specialized Alloy, Tubeless Ready, 29mm internal width, 28h

    Spokes

    Stainless, 14g

    Stainless, 14g

    Front Hub

    Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h

    Specialized alloy, sealed cardridge bearings, 6-bolt, 15x110mm thru-axle, 28h

    Rear Hub

    Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h

    Specialized alloy, sealed cartridge bearings, 6-bolt, 148mmx12mm thru-axle, 28h

    Tires

    Front: Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3", Rear: Purgatory, GRID Casing, GRIPTON® compound, 29x2.3"

    Front: Specialized Ground Control, GRID Casing, T7 Compound, 29x2.35, Rear: Specialized Ground Control, GRID Casing, T7 Compound, 29x2.35

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