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Women's Stumpjumper ST Alloy 27.5

2019 Women's Stumpjumper ST Alloy 27.5

Yes, the new Women's Stumpjumper ST 27.5 comes as an alloy version, and it may be the most radically designed alloy bike ever made. And with new tube shapes, an asymmetrical design, and the snappy handling that the 27.5 platform is known for, this bike is sure to exceed your expectations of 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 and shapes.

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. 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 2.8" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. 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.

The build here is no-nonsense with a focus on dependable, high-performing parts, like Shimano SLX front and rear derailleurs, Tektro Gemini disc brakes, a RockShox Recon RL fork with 130mm of travel, a custom X-Fusion 02 Pro RL rear shock with 130mm of travel, and wide alloy wheels.

Technical Specifications

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, 130mm of travel

SUSPENSION

FORK

RockShox Recon RL, Solo Air, 42mm offset, rebound adjust, lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel

REAR SHOCK

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

COCKPIT

HANDLEBARS

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

STEM

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

GRIPS

Specialized Sip Grip, half-waffle, slip-on

SADDLE

Body Geometry Myth Sport, steel rails, 155mm

SEATPOST

Specialized 2-bolt head, forged alloy, 5mm offset, micro-adjust, 34.9mm

SEAT BINDER

Specialized bolt-type, alloy, 38.6mm

BRAKES

FRONT BRAKE

Tektro Gemini Comp, hydraulic disc, resin pad, 200mm

REAR BRAKE

Tektro Gemini Comp, hydraulic disc, resin pad, 180mm

DRIVETRAIN

SHIFT LEVERS

Shimano SLX, 11-speed

REAR DERAILLEUR

Shimano SLX, Shadow Plus, 11-speed

CASSETTE

SunRace, 11-speed, 11-46t

CHAINRINGS

Steel, 32T

CRANKSET

SRAM NX, Boost™, direct-mount XSYNC, Powerspline

BOTTOM BRACKET

SRAM Powerspline

CHAIN

KMC X11, 11-speed w/ Missing Link™

WHEELS & TIRES

RIMS

Double-wall, 27mm internal-width

FRONT HUB

Specialized, sealed cartridge bearings, 15x110mm spacing, 32h

REAR HUB

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

SPOKES

Stainless, 14g

REAR TIRE

Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

FRONT TIRE

Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

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

XSSML
Crank Length165MM170MM170MM170MM
Handlebar Width750mm750mm750mm750mm
Stem Length50MM50MM50MM50MM
Saddle Width155mm155mm155mm155mm
Seatpost Length375mm375mm375mm435mm
Stack581mm586mm590mm618mm
Reach405mm425mm444mm465mm
Head Tube Length100mm105mm110mm140mm
Head Tube Angle66.5°66.5°66.5°66.5°
BB Height325mm325mm325mm325mm
BB Drop28mm28mm28mm28mm
Trail103mm103mm103mm103mm
Fork Length, Full522mm522mm522mm522mm
Fork Rake/Offset46mm46mm46mm46mm
Front Center696mm718mm739mm772mm
Chainstay Length432mm432mm432mm432mm
Wheelbase1127mm1149mm1170mm1203mm
Top Tube Length, Horizontal544mm568mm591mm624mm
Bike Standover Height742mm744mm749mm761mm
Seat Tube Length380mm380mm410mm455mm
Seat Tube Angle76.5°76.3°76°75.6°
Geometry

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