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2018 Men's Stumpjumper Expert 29

4.9

10 Reviews

Ever had a ride that felt more like an experience than just a ride? Us, too, and…

The All-New Stumpjumper

Product Details

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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, we've bottled up that feeling and put into a radical new frame design that's so 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.

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 2.6" 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.

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 fiber construction is lightweight, stiff, and ready to take on the trail. It's built off our 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 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.

Technical Specifications

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FRAMESET

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

SEAT BINDER

Specialized bolt-type, alloy, 38.6mm

SUSPENSION

REAR SHOCK

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

FORK

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

COCKPIT

STEM

Specialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm

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

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

BRAKES

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

DRIVETRAIN

REAR DERAILLEUR

SRAM GX Eagle, 12-speed

SHIFT LEVERS

SRAM GX Eagle, trigger, 12-speed

CASSETTE

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

CHAIN

SRAM GX Eagle, 12-speed w/ PowerLock®

CRANKSET

Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle

CHAINRINGS

30T

BOTTOM BRACKET

SRAM GXP

WHEELS

RIMS

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

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, 29x2.6"

REAR TIRE

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

INNER TUBES

Standard, Presta 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 Length40MM40MM50MM50MM
Saddle Width143mm143mm143mm143mm
Seatpost Length369mm429mm429mm429mm
Stack614mm614mm641mm656mm
Reach405mm425mm445mm470mm
Head Tube Length95mm95mm125mm140mm
Head Tube Angle66.5°66.5°66.5°66.5°
BB Height342mm342mm342mm342mm
BB Drop33mm33mm33mm33mm
Trail107mm107mm107mm107mm
Fork Length, Full560mm560mm560mm560mm
Fork Rake/Offset51mm51mm51mm51mm
Front Center714mm734mm766mm797mm
Chainstay Length437mm437mm437mm437mm
Wheelbase1149mm1169mm1201mm1232mm
Top Tube Length, Horizontal572mm595mm628mm662mm
Bike Standover Height747mm750mm762mm775mm
Seat Tube Length380mm410mm455mm505mm
Seat Tube Angle74.8°74.5°74.1°73.7°
Geometry

Rider Reviews

4.9

10 Reviews

 

¡¡¡Increíble¡¡¡

Sube, baja y rueda, y lo mas increíble con unas cubiertas de 2,6


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Name:
Belluy N.

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¡¡¡Increíble¡¡¡

Sube, baja y rueda, y lo mas increíble con unas cubiertas de 2,6


Name:
Belluy N.

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Awesome bike with a couple adjustments needed

TLDR - Great bike just be prepared to replace some parts if you ride aggressively First and foremost, let me say that this bike is a ton of fun to ride. I came from a XC racing background so adjusting from a light, twitchy race bike to this took some time. Once I did though I never want to go back. The bike capably conquers most anything you would want to throw it at with confidence to spare. HOWEVER, while I love the bike overall there are a couple items that you should be aware of: 1.) If you ride aggressively you will likely need to replace the Deluxe shock to really unlock this bike. Once I put on a Fox DPX2 the bike transformed into a trail eating machine. For my style of riding the stock shock did not have enough compression support, even loaded up with maximum volume spacers. I also blew up the stock shock damper in less than 100 hrs of riding. After about 70-80 hrs of riding the damper sounded like it had a substantial amount of air in it that just destroyed the performance. I have never had this occur on three previous shocks (2 fox, 1 x-fusion) and is why I went away from RS for the replacement. Unfortunately, I realized this was a warrantee issue about a week after I passed the 1 yr date from purchase. 2.) The rear hub sucks! This is an issue I have with the build kit. It is awesome to have a carbon rim BUT the hub it is laced to is terrible. I have already had to warranty the freehub, and we (myself and my LBS) cannot find a sweet spot on with hub tightness; either there is a ton of drag or there is play in the hub...pick your poison. I will be replacing the hub soon. 3.) Buy cush cores if you ride aggressively!! During the first two weeks I took a poor line through some rocks and hit one so hard it caused a rim strike which dented and cracked the rim (tire at ~20 PSI). Specialized refused the claim and I had to pay for a new rim. On my XC carbon race wheels I rode for 5 years and never had this happen despite numerous rock strikes.


Name:
Tim

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Best bike by far

I had the 2016 Stumpy and lived the bike. I deiced to spend a not insubstantial amount of money on the expert 2019. Wow it is definitely worth it. Everywhere i have ridden the bike in the UK it is so much more fun than my previous bikes. The bike instills confidence and is much more capable than I ever will be. I was dubious about the carbon hoops, but again it is a revelation and I love it


Name:
Dave M.

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Best trail bike ever

I bought this bike about 5 months ago and I love it. We have some amazing track where I live. From flow, to technical and insane downhill tracks. This beautiful beast takes me everywhere I want to go. I cannot praise this bike enough, if you want one bike to do it all then this is the bike for you.


Name:
Matt

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Ultimate Trail Bike

I think it is true. I mean I have not ridden everything out there but I do know after a month on this bike it is making me shine. That's the main reason to have a great bike! Technically, the long, slack 29er with 2.6 knobbies at low pressure is a perfect machine for the hardest climbs and the longest rocky descents. And for tight switchbacks it is like the perfectly sized ski to ark though the turn. It is so stable on tight corners in a low speed climb- the front doesn't get twitchy and cut too tight inside or get airborn- it just smoothly rounds the arc over roots, rocks and pine cones . On the downhill switchbacks you can lay into it and if the front tire starts to drift it is way easy to pull it back under you for a controlled exit on the turn. This gives confidence and becomes a playful aspect in this bike that must be state of the art geometry. Over the little airs that I like it just stays true and straight and lands so soft. It is not sluggish edge to edge and pumps and rolls beautifully with a traction reaction that has helped me drift on trails sort of like smearing a rockered ski in powder. I'm 150 lbs, 5'10"" and 53 years old but feeling younger everytime I ride. Perfect bike for me to ride Tahoe and the Yuba drainages. It does pay to play with your suspension. For me at least the computer results were too stiff for my style and I've found the rebound is good to learn so as to optimize whatever you are riding.


Name:
Mr D.

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This bike is worth every cent

This bike is fast and planted. It turns on a dime and rolls over everything I've thrown at it so far. Granted mid-Atlantic trails aren't extreme but it handles all the tight turns, roots, and everything else I've thrown at it. I would easily buy this bike again and recommend it to anyone that wants to spend the money on a great bike. Hoping to travel with this to find some trails worthy of the Stumpjumper name.


Name:
Todd

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Highly recommended and should be at the top of your list

Bought this for my wife, however I might keep it for myself! Its so composed effortless and suspension is fantastic I think its as good if not better than my vastly more expensive 2017 Trek Slash.


Name:
Chris

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Best Darn Bike Ive ever ridden

Just bought this bike and have nothing but great things to say about it. This bike is the perfect bike for everything. Much better than the 2017 6400 bike.


Name:
The G.

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Wish List

After five Stumpjumpers over the years, this is my next one. I only wish the color options were better. Can I have the Expert in the Comp color? :)


Name:
Stevo

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