2019 Specialized Stumpjumper Expert Carbon 29

Specialized

Price £5,150.00

• FACT 11m full carbon
  chassis and rear end
• 140mm of travel

Quick Spec


• FACT 11m full carbon
  chassis and rear end

• Sealed cartridge
  bearing pivots

• 12x148mm dropouts

• 140mm of travel

• Fully enclosed cable routing

• RockShox Pike RC forks

• RockShox Deluxe RT3

• Specialized hubs 

• Butcher, 29x2.6" front tyre

• Purgatory, 29x2.6" rear tyre

• SRAM Guide R brakes

• Hydraulic disc brakes

• Command Post IRcc seatpost

2019 SPECIALIZED STUMPJUMPER EXPERT 29


Ever had a ride that felt more like an experience than just a ride? Us, too, and we've been chasing that feeling ever since. With the Stumpjumper Expert 29, Specialized have bottled up that feeling and put into a radical new frame design that's so agile, lively, and in-tune with the trail, the bike feels like an extension of your body. Seriously, it's going to make you rethink how a trail bike should ride.

The 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, they had to get to work on dialing-in the materials, shapes, and the layout.

They started by creating their own mountain-specific stiffness test, and then they looked at the layout with Finite Element Analysis (FEA) to see where they 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. Specialized 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, they 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 minimises frame flex when the rear suspension is active.

Continuing 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 they use the 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—they 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 they made room for up to a 3.0"" tyre. You're also free to run whatever aftermarket rear shock you want, using standard metric shocks. The SWAT™ box has been revamped too, making it sleeker, lighter, and with more volume. And customisation 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, they 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.

For the build, you get a solid components package with a full SRAM GX1 Eagle drivetrain, SRAM Guide R disc brakes, RockShox front and rear suspension (150/140mm of travel respectively), and Roval Traverse Carbon 29 wheels.

  • The Stumpjumper's asymmetrical, FACT 11m carbon fibre construction is lightweight, stiff, and ready to take on the trail. It's built off their 29 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.
  • With three different compression adjustments—open/pedal/lock—incredible damping performance, and their 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.
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FULL SPECIFICATION

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, 140mm of travel

FORK RockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 51mm offset,
15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel

REAR SHOCK RockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm

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 Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built

INNER TUBES Presta, 40mm valve

FRONT TYRE Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"

REAR TYRE Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"

CRANKSET FC DESC 6K EAGLE B148 24MM 170 BLK 30

CHAINRINGS 30T

BOTTOM BRACKET SRAM GXP

SHIFTERS SRAM GX Eagle, trigger, 12-speed

REAR DERAILLEUR SRAM GX Eagle, 12-speed

CASSETTE SRAM GX Eagle, 12-speed, 10-50t

CHAIN SRAM GX Eagle, 12-speed w/ PowerLock®

FRONT BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor

REAR BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor

HANDLEBARS Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp

GRIPS Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness

STEM Specialized Trail, forged alloy, 4-bolt, 5mm rise

SADDLE Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm

SEATPOST Command 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 BINDER Specialized bolt-type, alloy, 38.6mm