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S-Works Stumpjumper ST 29

Was: £8250.00
Now: £4999.00

Satin/Carbon/Storm Grey


Size L is out of stock.



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Part No. 94718-0304


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Is there any better feeling than ragging a firmly-planted trail bike like the new Stumpjumper around bends and over berms We don't think so. Not everyone needs 150mm of travel though, which is why we put together a version of the Stumpy that offers greater agility and responsiveness the S-Works Stumpjumper ST 29. We teamed a still-impressive 130mm front and 120mm rear travel with a geo that's a wee bit steeper, allowing you to get a true connection with the trail.


The goal of the 2018 Stumpjumper was a spooky ability to communicate with its rider. We were aiming for a bike that knew how you should approach the trail ahead, almost before you did. Stiffness, it turns out, is the source of a great trail bike's telepathic powers because a bike that offers too much flex is going to be sending mixed messages to your brain with your feet experiencing one thing and your hands another. To fix this, we had to really lock in the materials, shapes and layout that we used to build this awesome machine.


After scheming up a mountain-specific test for stiffness we subjected the layout of the new Stumpy to Finite Element Analysis on the hunt for opportunities to improve that ever-elusive stiffness. While we found that the Large and X-Large frames needed greater front-end stiffness, the Medium and Small options were already bang on the money. With this insight we managed to improve efficiency by a huge 20%. We're delighted with how it turned out with the Stumpjumper weighing in as one of the lightest trail frames available on the market.


The new Sidearm we designed was a result of the aforementioned stiffness-obsession we brought to the development process. The front and rear ends are linked at three key places with the Sidearm there to make sure those important connections have as much rigidity as possible. This has the lovely extra benefit of shaving 100 grams from the weight of the rear end and really minimises the frame flex whenever the rear sus kicks in.


The inclusion of our Rx Trail Tune on both the rear and front suspension systems gives you a hyper-tweakable ride, with the inconsistencies created across varied wheel, frame and rider sizes neatly smoothed out. Rx Tune ensures every bike sits right in the middle of the adjustment spectrum, allowing you to go on and fine-tune the way it performs to your heart's content. This component spec comes with 29er wheels, and the suspension is tweaked to suit that size of hoop right out of the box so you'll experience suspension that is perfectly linear.


The use of a standard metric shock means you can run any after-market shock you wish helping keep life simple. Other fuss-free features include a threaded bottom bracket returning to the Stumpy for 2018 and clearance for tyres up to 3.0. Our beloved SWAT box gets a revamp too it's sleeker now and boasts more storage while the Flip Chip let's you tweak the geometry of the bike to your riding style.


This build boasts only the dopest of components, with SRAM's Guide RSC discs and a full XX1 Eagle drivetrain. The front and rear suspension come care of FOX Factory. Hoop duty is taken up by the world-beating Roval Traverse SL 29s.

  • 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 SWATâ„¢ 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 Factory rear shock features our Rx Trail Tune, ensuring that no matter the wheel or frame size, your bike is dialed-in perfectly.
  • With the legendary FIT4 damper, large and lightweight stanchions, and buttery-smooth Kashima coating, the FOX 34 Factory 130mm fork is one of the best out there.

Please note that this bike does not come with pedals.

FRAMEFACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWATâ„¢ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel
FORKFOX FLOAT 34 Factory, FIT4 damper, 3-position adjustment, Kashima Coat, 15x110mm Kabolt axle, 51mm offset, 130mm of travel
REAR SHOCKFOX FLOAT DPS Factory, Rx Trail Tune, EVOL Air sleeve, Kashima Coat, 3-position adjustment w/ Open Mode Adjustment, 190x42.5mm
INNER TUBESPresta, 40mm valve
FRONT TYREButcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"
REAR TYREPurgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"
CRANKSETSRAM XX1 Eagle, Boostâ„¢ 148, 170mm crankarm, 24mm spindle
SHIFT LEVERSSRAM XX1 Eagle, trigger, 12-speed
REAR DERAILLEURSRAM XX1 Eagleâ„¢, 12-speed
CASSETTESRAM X01 Eagle, 12-speed, 10-50t
CHAINSRAM XX1 Eagle, 12-speed w/ PowerLock®
FRONT BRAKESRAM Guide RSC, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor
REAR BRAKESRAM Guide RSC, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor
HANDLEBARSSpecialized Trail, FACT carbon, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm, 31.8mm
GRIPSSpecialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
STEMSyntace MegaForce 2, 6-degree, 31.8mm clamp
SADDLEBody Geometry Phenom Expert, Adaptive Edge design, hollow titanium rails, carbon fiber base, 143mm
SEATPOSTCommand Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel
SEAT BINDERSpecialized bolt-type, alloy, 38.6mm
PEDALSSpecialized Dirt

As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.

Please note that this bike does not come with pedals.

Size S M L XL
BB Drop 39mm 39mm 39mm 39mm
BB Height 333mm 333mm 333mm 333mm
Bike Standover Height 740mm 743mm 755mm 768mm
Chainstay Length 437mm 437mm 437mm 437mm
Fork Length, Full 540mm 540mm 540mm 540mm
Fork Rake/Offset 51mm 51mm 51mm 51mm
Front Center 707mm 727mm 758mm 789mm
Head Tube Angle 67.5° 67.5° 67.5° 67.5°
Head Tube Length 95mm 95mm 125mm 140mm
Reach 415mm 435mm 455mm 480mm
Seat Tube Angle 75.8° 75.5° 75.1° 74.7°
Seat Tube Length 380mm 410mm 455mm 505mm
Stack 607mm 607mm 635mm 649mm
Top Tube Length, Horizontal 569mm 592mm 624mm 657mm
Trail 99mm 99mm 99mm 99mm
Wheelbase 1141mm 1161mm 1192mm 1223mm

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