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    Women's Stumpjumper Comp Alloy 27.5

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    2018 Women's Stumpjumper Comp Alloy 27.5

    True—life is full of compromises. But on the trail, we're adamant believers that you should never have to "settle"—especially with alloy frames. Nothing is more tried and true, right? That's why our Women's Stumpjumper Comp Alloy 27.5 goes above and beyond to provide you with the ride of your life. Every touchpoint is tailored for female riders, while the frame shatters every rule in the design book with a total disregard for proprietary nonsense, a revolutionary new asymmetrical frame, and custom shock tunes exclusively for women.

    Our design goal for the new Stumpjumper was simple—design a trail bike 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 that examines the connection between a rider's a hands and feet, 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: Bigger frames needed more front-end stiffness while the smaller ones were just fine. We were able to keep the same stiffness standards in the front triangle of the smaller frames, while reducing weight by about 20%. And for the big frames, we ramped up the stiffness by 20% and kept the same weight.

    It was then time to turn our focus to the rear-end to see how we could further improve the ride. We developed a radical new sidearm design that crushes stiffness targets. By connecting all three shock mounting points in one structure, we were able to minimize deflection when the suspension is active, and this greatly contributes to the incredible new feel on the trail. The new sidearm design also takes about 100 grams out of the rear of the frame.

    We continued down the suspension path with a custom Women's Rx 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 and rider size. So, no matter what, you'll get perfectly linear suspension.

    Steps were also taken to get rid of all the proprietary nonsense. Threaded bottom brackets make a triumphant return, and we made room for up to a 2.8" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard stroke and eye-to-eye dimensions. No AUTOSAG. No Shock Block. Customization is also 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, slackens the head tube by half-a-degree, and shortens the reach by 5mm. 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. The nubs on this protector disrupt the wave of the chain, like throwing a rock into the water to break the surface tension before jumping off a cliff. It's super cool.

    The build comes with a list of components that deliver undeniable quality, like a Shimano SLX shifters, an XT rear derailleur, RaceFace cranks, Shimano SLX disc brakes, FOX front and rear suspension, and Roval Traverse 27.5 wheels. Meanwhile, every point that your body comes into contact with the bike has been tailored specifically for female riders with the inclusion of superlative kit, like a Body Geometry Myth Comp saddle, Sip Grips, and 750mm bars.

    Technical Specifications

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    FRAMESET

    FRAME

    M5 alloy chassis and rear end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel

    SEAT BINDER

    Specialized bolt-type, alloy, 38.6mm

    SUSPENSION

    REAR SHOCK

    FOX FLOAT DPS Performance, Rx Women's Tune, rebound and 3-position compression adjust, 210x52.5mm

    FORK

    FOX FLOAT Rhythm, 34, GRIP Damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel

    COCKPIT

    STEM

    Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise

    HANDLEBARS

    Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp

    GRIPS

    Specialized Sip Grip

    SADDLE

    Myth Sport, steel rails, 155mm

    SEATPOST

    X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, XS: 100mm, SM/M: 125mm, LG: 150mm of travel

    BRAKES

    FRONT BRAKE

    Shimano SLX, hydraulic disc, resin pads, 200mm

    REAR BRAKE

    Shimano SLX, hydraulic disc, resin pads, 180mm

    DRIVETRAIN

    REAR DERAILLEUR

    Shimano XT, Shadow Plus, GS cage, 11-speed

    SHIFT LEVERS

    Shimano SLX, 11-speed

    CASSETTE

    Shimano SLX, 11-speed, 11-46t

    CHAIN

    KMC X11, 11-speed w/ Missing Link™

    CRANKSET

    RaceFace Aeffect, 24mm spindle, 170mm crankarm

    CHAINRINGS

    32T

    BOTTOM BRACKET

    Threaded BB, 24mm spindle

    WHEELS

    RIMS

    Roval Traverse 27.5, hookless alloy, 29mm inner width, 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, 27.5 x 2.6"

    REAR TIRE

    Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"

    INNER TUBES

    Presta, 40mm valve

    ACCESSORIES

    PEDALS

    Specialized Dirt

    * Weights based on production painted frames as pictured. Actual weights will vary based on colourway, frame size, and component variation. Specifications are subject to change without notice.

    Geometry

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    XSSML
    Crank Length165MM170MM170MM170MM
    Handlebar Width750mm750mm750mm750mm
    Stem Length45MM45MM45MM45MM
    Saddle Width155mm155mm155mm155mm
    Seatpost Length325mm376mm376mm438mm
    Stack587mm592mm596mm623mm
    Reach395mm415mm435mm455mm
    Head Tube Length100mm105mm110mm140mm
    Head Tube Angle65.5°65.5°65.5°65.5°
    BB Height336mm336mm336mm336mm
    BB Drop21mm21mm21mm21mm
    Trail112mm112mm112mm112mm
    Fork Length, Full542mm542mm542mm542mm
    Fork Rake/Offset46mm46mm46mm46mm
    Front Center704mm726mm748mm780mm
    Chainstay Length432mm432mm432mm432mm
    Wheelbase1135mm1157mm1179mm1212mm
    Top Tube Length, Horizontal547mm570mm595mm627mm
    Bike Standover Height750mm752mm757mm769mm
    Seat Tube Length380mm380mm410mm455mm
    Seat Tube Angle75.5°75.3°75°74.6°
    Geometry

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