My Location

Enter your ZIP code so we can provide the most accurate inventory and delivery information.

Use My Location

See Full Map
Set Your Preferred Retailer

Use My Location

See Full Map
My Retailer

None saved

Other Stores Near You

Men's Stumpjumper ST Expert 29

2019 Men's Stumpjumper ST Expert 29

Trail bikes can't usually 'shred the gnarly stuff' and 'climb with your XC buddies,' but we're confident in saying that the Stumpjumper Expert ST 29 is totally capable of both. It combines precise handling, perfect suspension kinematics, and a complete abandon of proprietary nonsense with a slightly steeper geometry, less travel (130mm front/120mm rear), and 29-inch wheels to make it a true 'do-it-all' trail bike.

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 Pike RC fork and a Deluxe RT3 rear shock (130/120mm of travel respectively), and Roval Traverse Carbon 29 wheels.

Technical 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

SUSPENSION

FORK

RockShox Pike RC, DebonAir, rebound / low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 130mm of travel

REAR SHOCK

RockShox Deluxe RT3, Rx Trail Tune, rebound & 3-position compression adjust, 190x42.5mm

COCKPIT

HANDLEBARS

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

SADDLE

Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm

GRIPS

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

STEM

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

SEAT BINDER

Specialized bolt-type, alloy, 38.6mm

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

REAR BRAKE

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

FRONT BRAKE

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

DRIVETRAIN

CASSETTE

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

REAR DERAILLEUR

SRAM GX Eagle, 12-speed

SHIFT LEVERS

SRAM GX Eagle, trigger, 12-speed

BOTTOM BRACKET

SRAM GXP

CHAINRINGS

30T

CRANKSET

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

CHAIN

SRAM GX Eagle, 12-speed

WHEELS & TIRES

FRONT HUB

Specialized, sealed cartridge bearings, 15x110mm spacing, 28h

RIMS

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

FRONT TIRE

Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

SPOKES

DT Swiss Industry

REAR HUB

Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h

REAR TIRE

Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

INNER TUBES

Standard, Presta valve

ACCESSORIES

PEDALS

Specialized Dirt

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

SMLXL
Crank Length170MM170MM170MM170MM
Handlebar Width780mm780mm780mm780mm
Stem Length40MM40MM50MM50MM
Saddle Width143mm143mm143mm143mm
Seatpost Length369mm429mm429mm429mm
Stack607mm607mm635mm649mm
Reach415mm435mm455mm480mm
Head Tube Length95mm95mm125mm140mm
Head Tube Angle67.5°67.5°67.5°67.5°
BB Height333mm333mm333mm333mm
BB Drop39mm39mm39mm39mm
Trail99mm99mm99mm99mm
Fork Length, Full540mm540mm540mm540mm
Fork Rake/Offset51mm51mm51mm51mm
Front Center707mm727mm758mm789mm
Chainstay Length437mm437mm437mm437mm
Wheelbase1141mm1161mm1192mm1223mm
Top Tube Length, Horizontal569mm592mm624mm657mm
Bike Standover Height740mm743mm755mm768mm
Seat Tube Length380mm410mm455mm505mm
Seat Tube Angle75.8°75.5°75.1°74.7°
Geometry

Rider Reviews

  • 0
  • 0 Reviews