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2019 Men's Stumpjumper ST Comp Carbon 29 - 12-speed

5

8 Reviews

With the same 11m carbon construction as the S-Works, the Stumpjumper ST Comp Carbon…

The All-New Stumpjumper

Product Details

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With the same 11m carbon construction as the S-Works, the Stumpjumper ST Comp Carbon 29 with 12-speed SRAM NX Eagle brings you transcendent handling, custom-tuned suspension, and an elimination of proprietary headaches—all while keeping the speed you look for with 29-inch wheels. And don't forget that with its "ST" distinction, this Stumpjumper gets slightly steeper angles and less suspension (130mm front/120mm rear), so you get more nimble and responsive climbing ability and sublime descending prowess.

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.

The build on this Comp model comes with a list of components that deliver undeniable quality, like a like a 12-speed SRAM NX Eagle drivetrain, SRAM Guide R disc brakes, a FOX FLOAT Rhythm 34 for with 130mm of travel, a FOX FLOAT DPS rear shock with 120mm of travel, and Roval Traverse 29 wheels.

  • The Stumpjumper ST's asymmetrical, FACT 11m carbon fiber construction is lightweight, stiff, and ready for technical climbs and rowdy descents. It's built off of our 29 Trail Geometry, so it's both capable and comfortable. And with SWAT™ integration in the down tube, a threaded BB, easy cable routing, and a brand new chain silencer, it's ready for anything the trail, or you, throw at it.

  • The FOX DPS Performance rear shock features our Rx Trail Tune, ensuring that no matter the frame or wheel size, your bike is dialed-in perfectly.

  • SRAM's 12-speed NX Eagle groupset features a wide gear range that delivers climbing and descending efficiency in spades.

Technical Specifications

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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, 120mm of travel

SUSPENSION

FORK

FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 130mm of travel

REAR SHOCK

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

COCKPIT

HANDLEBARS

Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width

STEM

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

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

X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L/XL: 150mm 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 NX Eagle, trigger, 12-speed

REAR DERAILLEUR

SRAM NX Eagle, 12-speed

CASSETTE

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

CRANKSET

SRAM NX Eagle, DUB, 170mm

CHAINRINGS

Steel, 30T

BOTTOM BRACKET

SRAM DUB, threaded BB

CHAIN

SRAM NX Eagle, 12-speed

WHEELS & TIRES

RIMS

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

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, 29x2.3"

REAR TIRE

Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

INNER TUBES

Standard, Presta valve

ACCESSORIES

PEDALS

Specialized Dirt

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

Geometry

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SMLXL
Crank Length170mm170mm170mm170mm
Handlebar Width780mm780mm780mm780mm
Stem Length45MM45MM45MM45MM
Saddle Width143mm143mm143mm143mm
Seatpost Length376mm438mm438mm438mm
Stack607mm607mm635mm649mm
Reach415mm435mm455mm480mm
Head Tube Length95mm95mm125mm140mm
Head Tube Angle67.5°67.5°67.5°67.5°
BB Height333mm333mm333mm333mm
BB Drop39mm39mm39mm39mm
Trail99mm99mm99mm99mm
Fork Length, Full540mm540mm540mm540mm
Fork Rake/Offset51mm51mm51mm51mm
Front Center707mm727mm758mm789mm
Chainstay Length437mm437mm437mm437mm
Wheelbase1141mm1161mm1192mm1223mm
Top Tube Length, Horizontal569mm592mm624mm657mm
Bike Standover Height740mm743mm755mm768mm
Seat Tube Length380mm410mm455mm505mm
Seat Tube Angle75.8°75.5°75.1°74.7°
Geometry

Rider Reviews

5

8 Reviews

 

Great bicycle 🙌🙌🙌

I really love it!

Would Recommend?
Yes!

Name:
Erick

Helpful?

Stumpjumper - schon mein zweites

Nach Jahren mit Cannondale bin ich wieder zu Specialized zurück und hab das Stumpjumper ST gekauft. Ein tolles Bike - nicht die allerbesten Komponenten, aber stimmig bis ins kleinste Detail. Der Rahmen in der blauen Farbe ist Hammer, auf dem Trail brennt auch mit dem kürzeren Federweg nichts an. Von mir eine klare Empfehlung :-)


Verified Buyer
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Name:
Maexer

Helpful?

Stumpjumper - schon mein zweites

Nach Jahren mit Cannondale bin ich wieder zu Specialized zurück und hab das Stumpjumper ST gekauft. Ein tolles Bike - nicht die allerbesten Komponenten, aber stimmig bis ins kleinste Detail. Der Rahmen in der blauen Farbe ist Hammer, auf dem Trail brennt auch mit dem kürzeren Federweg nichts an. Von mir eine klare Empfehlung :-)


Verified Buyer
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Name:
Maexer

Helpful?

Stumpjumper ST comp carbon 29

Bike muito versatil, bem contruido, excelente geometria e muito confiavel. A bike vai muito bem no xc e nas trilhas, excelente para quem procura uma bike entre xc e enduro.


Verified Buyer
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Name:
Claudio

Helpful?

Stumpjumper ST comp carbon 29

Bike muito versatil, bem contruido, excelente geometria e muito confiavel. A bike vai muito bem no xc e nas trilhas, excelente para quem procura uma bike entre xc e enduro.


Name:
Claudio

Helpful?

Love this bike

Went into my bike shop looking for a different bike. After explaining that I normally ride green and blue trails, don't do jumps, but like climbing and descending, my bike shop recommended I try this bike and I couldn't be happier. Have used it on all types of trails, rough, flowing, and several different states I couldn't be happier. Climbs great and handles roots, logs and obstacles easilty. Would definetly recommend this bike


Name:
Sidewinder

Helpful?

Best bike ever

I ride between difficult trail and cross country rides. I couldn't find a better bike for me! For long rides to speedy trails is the most comfortable ever build bike.


Name:
Juan B.

Helpful?

There is one word that pretty much sums this bike up, fast.

I use my Stumpjumper for both trail and cross country racing and it is great. It even makes cross country racing fun! It is a great bike and I love the new body style and the colors that the comp carbon st comes in.


Name:
Chris

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