Satin/Carbon/Black

Men's Stumpjumper ST Expert 29

£4000.00

Satin/Carbon/Black

Sizes:
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M
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XL

Size S is out of stock.

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Part No. 94718-3102

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HOME > BIKES > MOUNTAIN > MEN'S STUMPJUMPER ST EXPERT 29

The Stumpjumper Expert ST 29 is a bike born to be both a shredder of gnarliness and an XC-worthy climber. Its dialled handling and sublime suspension kinematics are augmented with fast-rolling 29er wheels and scaled back travel the words true all-rounder' were never better suited.

Stiffness is what makes a trail bike feel stable, so we focused all our efforts on pursuing that often elusive quality. We approached the Stumpy with fresh eyes this year, optimising the layout, the shapes and the materials all with that one goal in mind.

Drawing on a mountain-specific test for stiffness developed in-house and a process of Finite Element Analysis, we explored the properties of our prototype models in the hunt for major gains. Our Small and Medium-sized frames were found to perform superbly, but the Large and X-Large options needed a little tweaking to optimise their front end stiffness. With these insights in hand, we were able to improve efficiency by 20% and ensure the frame remains one of the lightest on the market.

The radical facelift of the Stumpjumper for 2018 with the switch to a Sidearm frame design is down to stiffness too. You see, the rear and front ends are linked at three key points, with the Sidearm ensuring all three of these connections are super stiff and secure. It's all about minimising flex in the frame when the rear suspension is in action. The bonus side-effect of the new design is that the rear end weighs in at 100 grams lighter than before.

Chasing further suspension improvements, we added our Rx Trail Tune to both shock and fork. The use of Rx Tune allows for every Stumpy regardless of frame size to sit bang in the middle of the adjustment range when it comes out the box, giving you the optimal amount of customisability. This feature means you can tweak the characteristics of your bike to match the way you want to ride it. The good news is we also have specific Rx Tunes for different wheel sizes, so this 29er model will perform optimally.

A big part of the Stumpy redesign was usability we set out to make a bike that is as easy to live with as it is to love. As such, we've got a threaded bottom bracket on there and clearance for up to 3.0 tyres. You can sling any after-market shock you want on the rig now, as we've done away with non-standard shocks of the past. We've also retooled our beloved SWAT box, making it both more capacious and better integrated into the frame streamlined storage for all your ride essentials. Our Flip Chip tech lets you actually change the geometry of the frame, with a 6mm difference in BB height between the High and Low settings. It also affords a half-degree change in head tube angle. We have a newly designed ribbed chain stay protector on there too, effectively eradicating the dreaded chain slap.

A major feature that you and your mechanic are both going to love; the fully-routed internal cable tubes', which will guide your cables all the way through the frame. That means no more evenings lost to magnets, pokey spokes and other frustrating endeavours and more time to actually ride your bike!

The drivetrain on this model is SRAM's GX1 Eagle, while the disc brakes are also from SRAM their Guide R option. A Rockshox Pike RC fork combines with a Deluxe RT3 rear shock to deliver 130 and 120mm of travel. The formidable Roval Traverse Carbon 29er wheels complete this fearsome build.

  • 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.
  • With three different compression adjustments—open/pedal/lock—incredible damping performance, and our Rx Trail Tune, the RockShox Deluxe RT3 perfectly complements the Stumpjumper.
  • RockShox's Pike is known for its trail performance, and the RC found here has stiff stanchions, a Charger damper, and plenty of sensitivity.


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
FORKRockShox Pike RC, DebonAir, rebound / low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 130mm of travel
REAR SHOCKRockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 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"
CRANKSETFC DESC 6K EAGLE B148 24MM 170 BLK 30
CHAINRINGS30T
BOTTOM BRACKETSRAM GXP
SHIFT LEVERSSRAM GX Eagle, trigger, 12-speed
REAR DERAILLEURSRAM GX Eagle, 12-speed
RIMSRoval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built
FRONT HUBSpecialized, sealed cartridge bearings, 15x110mm spacing, 28h
REAR HUBSpecialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
SPOKESDT Swiss Industry
CASSETTESRAM GX Eagle, 12-speed, 10-50t
CHAINSRAM GX Eagle, 12-speed w/ PowerLock®
FRONT BRAKESRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor
REAR BRAKESRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor
HANDLEBARSSpecialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
GRIPSSpecialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
STEMSpecialized Trail, forged alloy, 4-bolt, 5mm rise
SADDLEBody Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 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.


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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