Image of Specialized Men's Stumpjumper ST Comp Carbon 29
2018

Specialized Men's Stumpjumper ST Comp Carbon 29

Specialized Stumpjumper 2018

5600

Enduro Trail

At a glance

The 2018 Specialized Men's Stumpjumper ST Comp Carbon 29 is a Enduro and Trail Carbon mountain bike. It sports 29" wheels, is priced at $5,600 AUD, has Fox suspension and a Shimano drivetrain. The bike is part of Specialized's Stumpjumper range of mountain bikes.

With the same 11m carbon construction as the S-Works, the Stumpjumper ST Comp Carbon 29 brings you transcendent handling, custom-tuned suspension, and an elimination of proprietary headaches—all while keeping the speed you look for with 29-inch wheels. And don’t forget that with its ST distinction, this Stumpjumper gets slightly steeper angles and less suspension (130mm front/120mm rear), so you get more nimble and responsive climbing ability and sublime descending prowess. 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. The build on this Comp model comes with a list of components that deliver undeniable quality, like a Shimano XT/SLX drivetrain with RaceFace cranks, Shimano SLX disc brakes, a FOX FLOAT Rhythm 34 for with 130mm of travel, a FOX FLOAT DPS rear shock with 120mm of travel, and Roval Traverse 29 wheels.

Where To Buy

Reviews

Specifications

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, 120mm of travel
  • Fork
    FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 130mm of travel
  • Shock
    FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 190x42.5MM
Wheels
  • Hubs
    [F] Specialized, sealed cartridge bearings, 15x110mm spacing, 28h [R] Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
  • Wheels
    Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready, 28h
  • Wheel Size
    29"
  • Spokes
    DT Swiss Industry
  • Tires
    [F] Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" [R] Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"
Drivetrain
  • Chain
    KMC X11, 11-speed w/ Missing Link™
  • Crank
    RaceFace Aeffect, 24mm spindle, 170mm crankarm
  • Bottom Bracket
    Threaded BB, 24mm spindle
  • Rear Derailleur
    Shimano XT, Shadow Plus, GS cage, 11-speed
  • Shifters
    Shimano SLX, 11-speed
  • Cassette
    Shimano SLX, 11-speed, 11-46t
  • Pedals
    Specialized Dirt
Components
  • Brakeset
    [F] Shimano SLX, hydraulic disc, resin pads, 200mm [R] Shimano SLX, hydraulic disc, resin pads, 180mm
  • Handlebar
    Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width
  • 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
  • Stem
    Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise

FAQ

Q: How much is a 2018 Specialized Men's Stumpjumper ST Comp Carbon 29?

A 2018 Specialized Men's Stumpjumper ST Comp Carbon 29 is typically priced around $5,600 AUD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: What size wheels does the 2018 Specialized Men's Stumpjumper ST Comp Carbon 29 have?

The 2018 Specialized Men's Stumpjumper ST Comp Carbon 29 has 29" wheels.

Q: What size 2018 Specialized Men's Stumpjumper ST Comp Carbon 29 should I get?

After measuring your height, use the size chart below to find the typical Specialized Men's Stumpjumper ST Comp Carbon 29 size for your height. Remember that these sizes are a general guide and bike sizes can vary between riders and bikes. The best way to find your size is to go for a test ride.

Rider Height (cm)Rider Height (in)Frame Size
148cm - 158cm4'10" - 5'2"XS
158cm - 168cm5'2" - 5'6"S
168cm - 178cm5'6" - 5' 10"M
178cm - 185cm5'10" - 6'1"L
185cm - 193cm6'1" - 6'4"XL
193cm - 198cm6'4" - 6'6"XXL

Discussion

0 Replies

No comments on this bike yet.

Leave a Reply

Your email address will not be published.

Deals View All

Recent Posts View All

Blackburn Honest Digital Pressure Gauge Review
Blackburn Honest Digital Pressure Gauge Review

It's 2020 people. The squeeze and bounce test doesn't cut it anymore (and this is…

Read More
Comparing Mountain Bikes
Comparing Mountain Bikes

Mountain Bikes are complicated machines. They have parts from hundreds of different manufacturers, come in…

Read More
Undomestic Mountain Bikes: Here’s what we know
Undomestic Mountain Bikes: Here’s what we know

Update March 2020: Undomestic has announced that they are manufacturing frames "at this moment" and…

Read More