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Men's Stumpjumper Comp Carbon 27.5

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2019 Men's Stumpjumper Comp Carbon 27.5

Don't worry, S-Works doesn't get to have all of the fun—the new Stumpjumper Comp Carbon 27.5 features the same frame with a full 11m carbon chassis and rear-end as its older brother, but with a solid list of no-fuss components for an everyman's budget.

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 2.8" 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 Shimano SLX drivetrain with RaceFace cranks, Shimano SLX disc brakes, FOX front and rear suspension, and Roval Traverse 27.5 wheels.

Technical Specifications

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FRAMESET

FRAME

FACT 11m, full carbon chassis and rear-end, asymmetrical design, 27.5 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel

SUSPENSION

FORK

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

REAR SHOCK

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

COCKPIT

HANDLEBARS

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

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

Shimano SLX, hydraulic disc, resin pads, 200mm

REAR BRAKE

Shimano SLX, hydraulic disc, resin pads, 180mm

DRIVETRAIN

SHIFT LEVERS

Shimano SLX, 11-speed

REAR DERAILLEUR

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

CASSETTE

Shimano SLX, 11-speed, 11-46t

CRANKSET

Race Face Aeffect, 24mm spindle, 170mm crankarm

CHAINRINGS

32T

BOTTOM BRACKET

Threaded BB, 24mm spindle

CHAIN

KMC X11, 11-speed w/ Missing Link™

WHEELS & TIRES

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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SMLXL
Crank Length170MM170MM170MM170MM
Handlebar Width780mm780mm780mm780mm
Stem Length45MM45MM45MM45MM
Saddle Width143mm143mm143mm143mm
Seatpost Length376mm438mm438mm438mm
Stack592mm596mm623mm637mm
Reach415mm435mm455mm480mm
Head Tube Length105mm110mm140mm155mm
Head Tube Angle65.5°65.5°65.5°65.5°
BB Height336mm336mm336mm336mm
BB Drop21mm21mm21mm21mm
Trail112mm112mm112mm112mm
Fork Length, Full542mm542mm542mm542mm
Fork Rake/Offset46mm46mm46mm46mm
Front Center726mm748mm780mm812mm
Chainstay Length432mm432mm432mm432mm
Wheelbase1157mm1179mm1212mm1243mm
Top Tube Length, Horizontal570mm595mm627mm660mm
Bike Standover Height739mm743mm758mm774mm
Seat Tube Length380mm410mm455mm505mm
Seat Tube Angle75.3°75°74.6°74.2°
Geometry

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