Bike Comparison
    MSRP
    $3,899$3,500$2,999
    Where to Buy
    $1

    At

    $1

    At

    $1

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    Category
    TrailTrailTrail
    Weight
    30.4 lbs28.9 lbs
    5.6
    5.3
    6.3
    AluminumAluminumCarbon
    Fork
    Fox Rhythm Float 34Fox Rhythm Float 34Fox Rhythm Float 34
    Shock
    FoxFox Float DPS PerformanceFox Float DPS Performance
    Wheels
    AluminumAluminumAluminum
    29″ / 29″29″29″
    Brakes
    Hydraulic DiscHydraulic DiscHydraulic Disc
    Groupset
    GX Eagle, X1NX EagleNX Eagle
    Drivetrain
    1 × 121 × 121 × 12
    Suspension
    FullFullFull
    Front Travel
    140mm140mm130mm
    Rear Travel
    130mm130mm130mm
    Brand Site

    trekbikes.com

    specialized.com

    us.yt-industries.com

    Summary
    The Trek Fuel EX 8 GX, Specialized Stumpjumper Comp Alloy, and YT Industries IZZO Comp are all full suspension trail bikes. The Fuel EX 8 GX has 29″ / 29″ aluminum wheels and better components, while the IZZO Comp has a carbon frame.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    2021 Fuel EX 8 GX
    2021 Stumpjumper Comp Alloy
    2020 IZZO Comp
    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

    2021 Fuel EX 8 GX

    24 mph

    2021 Stumpjumper Comp Alloy

    25 mph

    2020 IZZO Comp

    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

    Alpha Platinum Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130 mm travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.6"

    ColorsRage Red to Dnister Black Fade; Dark Aquatic / Trek Black

    Alloy chassis and rear-end, asymmetrical design, 29 Trail Geometry, horst pivot BB adjustment, threaded BB, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.6"

    ColorsRage Red to Dnister Black Fade; Dark Aquatic / Trek Black

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.6"

    ColorsRage Red to Dnister Black Fade; Dark Aquatic / Trek Black

    Fork

    Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel

    Travel140mm

    Spring TypeAir

    FOX FLOAT 34 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset,140mm of travel

    Travel140mm

    Spring TypeAir

    FOX 34 Float Rhythm 29" | 130 mm | 15QRx110 | 44 mm Rake

    Travel140mm

    Spring TypeAir

    Shock

    Size: XS, S, Fox Performance Float EVOL, 3-position RE:aktiv damper, tuned by Trek Suspension Lab, 210 mm x 52.5 mm; Size: S, M, ML, L, XL, XXL, Fox Performance Float EVOL, 3-position RE:aktiv damper, tuned by Trek Suspension Lab, 210 mm x 55 mm

    Travel130mm

    Spring TypeAir

    FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, S1:190x42.5mm, S2-S6: 190x45mm

    Travel130mm

    Spring TypeAir

    FOX Float DPS Perf. Elite 210 x 55 mm | Remote

    Travel130mm

    Spring TypeAir

    Bottom Bracket

    SRAM DUB, 92 mm, PressFit

    SRAM DUB, BSA 73mm, Threaded

    Headset

    Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom

    Acros AZX S - M AZX - 586 Block Lock | High Cap, L - XXL AZX - 576 | High Cap

    Stem

    Size: XS, S, Bontrager Line, 35 mm, Knock Block, 0-degree, 40 mm length; Size: M, ML, L, XL, XXL, Bontrager Line, 35 mm, Knock Block, 0-degree, 50 mm length

    Alloy Trail Stem, 35mm bar bore

    Race Face Aeffect S - M 50 mm Length / L - XXL 60 mm | 35 mm clamp

    Handlebar

    Size: XS, S, Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width; Size: M, ML, L, XL, XXL, Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width

    Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width

    Race Face Aeffect 35 20 mm Rise | 760 mm Width

    Saddle

    Bontrager Arvada, hollow chromoly rails, 138 mm width

    Bridge Comp, Hollow Cr-mo rails, 155/143mm

    SDG RADAR MNT YT Custom

    Seatpost

    Size: XS, S, Bontrager Line Dropper, 100 mm travel, internal routing, 31.6 mm, 345 mm length; Size: M, ML, L, XL, XXL, Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length

    X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1:100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm)

    YT Postman 31.6 mm | S 100 mm / M 125 mm / L 150 mm / XL - XXL 170 mm | Matchmaker Remote

    Pedals

    included / inklusive The included pedals were not made for demanding trails or racing. That is why we also offer you quality pedals at an attractive price in the shopping cart.

    Grips

    Bontrager XR Trail Elite, nylon lock-on

    RockShox TwistLoc Sprint Remote

    Groupset
    Rear Derailleur

    SRAM GX Eagle

    SRAM NX Eagle, 12-speed

    SRAM NX Eagle 12 - Speed

    Crank

    Size: XS, S, SRAM X1 Eagle, DUB, 30T steel ring, 52 mm chainline, 170 mm length; Size: M, ML, L, XL, XXL, SRAM X1 Eagle, DUB, 30T steel ring, 52 mm chainline, 175 mm length

    SRAM NX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, Steel, 30T

    SRAM NX Eagle S 170 mm / M-XL 175 mm | 32T | DUB

    Shifters

    SRAM GX Eagle, 12-speed

    SRAM NX Eagle, trigger, 12-speed

    SRAM NX Eagle 12 - Speed

    Cassette

    SRAM Eagle XG-1275, 10-52, 12-speed

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

    SRAM PG1230 Eagle 11 - 50T | 12 - Speed

    Chain

    SRAM GX Eagle, 12-speed

    SRAM NX Eagle, 12-speed

    Brakes

    SRAM G2 R hydraulic disc

    Front: SRAM G2 R, 4-piston caliper, hydraulic disc, 200mm, Rear: SRAM G2 R, 4-piston caliper, hydraulic disc, 180mm

    SRAM G2 R Rotor CENTERLINE 200 mm / 180 mm

    Wheels
    Rims

    Front: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, Rear: Bontrager Line Comp 30, Tubeless-Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle

    Roval 29, hookless alloy, 30mm inner width, tubeless ready

    DT Swiss M 1900 Spline 29“ x 30 mm| 110 x 15 mm | 148 x 12 mm

    Spokes

    DT Swiss Champion, J-Bend, Black

    DT Swiss Industry

    Front Hub

    Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle

    Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h

    Rear Hub

    Bontrager alloy, sealed bearing, 6-bolt, 108T Rapid Drive, SRAM XD driver, Boost148, 12mm thru axle

    Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h

    Tires

    Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.40"; Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.60"; Size: S, M, ML, L, XL, XXL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.40"; Size: S, M, ML, L, XL, XXL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60"

    Front: Butcher, GRID casing, GRIPTON® compound, 29x2.3", Rear: Purgatory, GRID Casing, GRIPTON® compound, 29x2.3"

    Front: MAXXIS FORECASTER 29“ x 2.35 | EXO | TR, Rear: MAXXIS FORECASTER 29“ x 2.35 | EXO | TR

    Disc Rotors

    Size: XS, S, M, ML, L, XL, XXL, SRAM CenterLine, 6-bolt, round edge, 180 mm; Size: M, ML, L, XL, XXL, SRAM CenterLine, 6-bolt, round edge, 200 mm

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