Specialized Stumpjumper Comp Carbon 27.5 – Gloss/White Mtn/Nice Blue
Don't worry S-Works doesn't get to have all of the fun—the new Stumpjumper Comp Carbon 27.5 features the same nimble handling and 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 3.0″ 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.
The Stumpjumper's asymmetrical FACT 11m carbon fiber construction is lightweight stiff and ready to take on the trail.
It's built off our 27.5 Trail Geometry so it's just the right amount of both capable and comfortable.
And with SWAT™ integration in the down tube a threaded BB easy cable routing and an all 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 wheel or frame size your bike is dialed-in perfectly.
A FOX 34 Rhythm fork handles suspension duties up front with stiff stanchions and plenty of adjustability.
Specs and Geos: 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 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 210×52.5mm FRONT HUB Specialized sealed cartridge bearings 15x110mm spacing 28h REAR HUB Specialized sealed cartridge bearings 12x148mm thru-axle 28h SPOKES DT Swiss Industry RIMS Roval Traverse 27.5 hookless alloy 29mm inner width tubeless ready 28h INNER TUBES Presta 40mm valve FRONT TYRE Butcher GRID Casing GRIPTON® compound 2Bliss Ready 27.5 x 2.6″ REAR TYRE Purgatory GRID casing GRIPTON® compound 2Bliss Ready 27.5 x 2.6″ CRANKSET RaceFace Aeffect 24mm spindle 170mm crankarm CHAINRINGS 32T BOTTOM BRACKET Threaded BB 24mm spindle SHIFT LEVERS Shimano SLX 11-speed REAR DERAILLEUR Shimano XT Shadow Plus GS cage 11-speed CASSETTE Shimano SLX 11-speed 11-46t CHAIN KMC X11 11-speed w/ Missing Link™ FRONT BRAKE Shimano SLX hydraulic disc resin pads 200mm rotor REAR BRAKE Shimano SLX Hydraulic Disc Resin Pad HANDLEBARS Specialized 6061 alloy 6-degree upsweep 8-degree backsweep 27mm rise 780mm width GRIPS Specialized Sip Grip half-waffle S/M: regular thickness L/XL: XL thickness STEM Specialized Trail 3D forged alloy 4-bolt 6-degree rise SADDLE Body Geometry Phenom Comp Adaptive Edge design 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 PEDALS Specialized Dirt