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    Stumpjumper Expert 29

    2019 Stumpjumper Expert 29

    Ever had a ride that felt more like an experience than just a ride? Us, too, and we've been chasing that feeling ever since. With the Stumpjumper Expert 29, we've bottled up that feeling and put into a radical new frame design that's so in-tune with the trail, the bike feels like an extension of your body. Seriously, it's going to make you rethink how a trail bike should ride.

    Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialing-in the materials, shapes, and the layout.

    We started by creating our own mountain-specific stiffness test, and then we looked at the layout with Finite Element Analysis (FEA) to see where we could get the biggest stiffness improvements. This led to a big discovery: The Large and X-Large frames needed more front-end stiffness while the Smalls and Mediums were just fine. We were able to create a frame design that was 20% more efficient. And in the end, this proved to be one of the lightest trail frames on the market, today.

    When designing the frame with the stiffness targets being a main goal, we developed a radical new sidearm design. The front-end and rear-end are connected at three points, and the sidearm helps keep all these points super stiff and connected, all while taking about 100 grams out of the rear-end. More explicitly, this minimizes frame flex when the rear suspension is active.

    We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame, wheel, and rider size, so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum, and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes—we developed a specific Rx Tune for each platform. So, no matter what wheel size you prefer, you'll get perfectly linear suspension.

    Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return, and we made room for up to a 2.6" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. We revamped the SWAT™ box, too, making it sleeker, lighter, and with more volume. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain. Lastly, we seriously couldn't make cable routing any easier on carbon models. Full tubes can be found throughout the carbon frame, so all you have to do is push the cable and it'll come out the other end. No more lazy loop, hidden stashes of magnets, pokey spokes, or pillows to cry in.

    For the build, you get a solid components package with a full SRAM GX1 Eagle drivetrain, SRAM Guide R disc brakes, RockShox front and rear suspension (150/140mm of travel respectively), and Roval Traverse Carbon 29 wheels.

    Especificações Técnicas

    FRAMESET

    FRAME

    FACT 11m, full carbon chassis and rear-end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel

    SUSPENSION

    FORK

    RockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel

    REAR SHOCK

    RockShox Deluxe RT3, Rx Trail Tune, rebound & 3-position compression adjust, 210x50mm

    COCKPIT

    HANDLEBARS

    Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp

    STEM

    Specialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm

    GRIPS

    Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness

    SADDLE

    Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm

    SEATPOST

    Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel

    SEAT BINDER

    Specialized bolt-type, alloy, 38.6mm

    BRAKES

    FRONT BRAKE

    SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm

    REAR BRAKE

    SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm

    DRIVETRAIN

    SHIFT LEVERS

    SRAM GX Eagle, trigger, 12-speed

    REAR DERAILLEUR

    SRAM GX Eagle, 12-speed

    CASSETTE

    SRAM GX Eagle, 12-speed, 10-50t

    CRANKSET

    Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle

    CHAINRINGS

    30T

    BOTTOM BRACKET

    SRAM GXP

    CHAIN

    SRAM GX Eagle, 12-speed

    WHEELS & TIRES

    RIMS

    Roval Traverse Carbon 29, hookless carbon, 30mm inner width, hand-built, tubeless ready, 28h

    FRONT HUB

    Specialized, sealed cartridge bearings, 15x110mm spacing, 28h

    REAR HUB

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

    SPOKES

    DT Swiss Industry

    FRONT TIRE

    Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"

    REAR TIRE

    Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"

    INNER TUBES

    Standard, Presta valve

    ACCESSORIES

    PEDALS

    Specialized Dirt

    * Pesos baseados em quadros pintados de produção, conforme ilustrado. Os pesos reais variarão com base na cor, tamanho do quadro e variação do componente. As especificações estão sujeitas a alterações sem aviso prévio.

    Geometria

    SMLXL
    Comprimento do Cranque170MM170MM170MM170MM
    Comprimento do Guiador780mm780mm780mm780mm
    Comprimento do Avanço40MM40MM50MM50MM
    Saddle Width143mm143mm143mm143mm
    Espigão de Selim369mm429mm429mm429mm
    Stack614mm614mm641mm656mm
    Reach405mm425mm445mm470mm
    Comprimento do Tubo de Direção95mm95mm125mm140mm
    Ângulo do Tubo de Direção66.5°66.5°66.5°66.5°
    BB Height342mm342mm342mm342mm
    BB Drop33mm33mm33mm33mm
    Trail107mm107mm107mm107mm
    Fork Length, Full560mm560mm560mm560mm
    Rake da Forqueta/Offset51mm51mm51mm51mm
    Front Center714mm734mm766mm797mm
    Comprimento da Escora Inferior437mm437mm437mm437mm
    Distância entre Eixos1149mm1169mm1201mm1232mm
    Tubo Superior, Horizontal572mm595mm628mm662mm
    Bike Standover Height747mm750mm762mm775mm
    Seat Tube Length380mm410mm455mm505mm
    Ângulo do Tubo Vertical74.8°74.5°74.1°73.7°
    Geometria

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