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Stumpjumper Comp Alloy

$2,499.99-$4,000

4.6

42 Reviews

Metal fans rejoice! The Stumpjumper Comp Alloy rocks on, with one of the most advanced…

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1974 to 2024: A 50-Year Tradition of Innovation
Pedal the Planet Forward

1974 to 2024: A 50-Year Tradition of Innovation

As Specialized celebrates its 50th Anniversary of innovating to improve riders’ lives, we have our sites set on the next half century and creating the future of cycling. Join us as we look back at five decades of innovation so we can continue to Pedal the Planet Forward together.

How are carbon bikes made? Peter Denk talks Specialized Stumpjumper

Product Details

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Metal fans rejoice! The Stumpjumper Comp Alloy rocks on, with one of the most advanced alloy frames ever developed. From the frame’s asymmetrical design, taking in the refined suspension kinematics and all-new geometry, to a build kit that strikes the optimal combination of performance and value, it’s metal, but it ain’t heavy metal. And it’s ready to slay some dirt.

  • THE TRAIL BENCHMARK — When we set out to design the all-new Stumpjumper, we pursued some hefty goals. It had to excel on any kind of trail, for every style of rider. To achieve that, we went after serious weight reduction without sacrificing durability, a stiff, responsive chassis that still rides light and lively, geometry that improves everyone’s riding, and the best suspension kinematics we know how to design. Turns out, you can have your cake and eat it too with the new Stumpjumper.

  • THE SWEETEST 130MM OF TRAVEL YOU’LL EVER RIDE — We massaged the kinematics of the Stumpjumper suspension to bring out the very best all-round performance possible in a 130mm package. Countless hours of suspension lab development and field testing created a refined mid-travel ripper that eats big terrain like a gravity fed beast, handles like a dream everywhere, and climbs like it has a motor.

  • PROGRESSIVE GEOMETRY — The S-Sizing geometry of the new Stumpjumper hits the progressive sweet spot. It’s long, low and slack, with a short offset fork and a steeper seat tube angle. These numbers combine to make your ride more stable, more carvealicious, more comfortable climbing, more better everywhere. With FlipChip adjustability you’re able to further fine-tune your fit, ensuring that your new Stumpjumper performs flawlessly on whatever terrain you choose.

  • RIDER-FIRST ENGINEERED™ — Rider-First Engineered™ frames use a size-specific approach to ride characteristics that ensures benchmark handling and flawless performance, regardless of frame or rider size. Whether you’re a jump-happy grom riding an S1, or a DH-fiend giant in need of the lengthy S6, you’ll experience the same ride traits – rail-sharp cornering and balanced front and rear stiffness – at the lightest-possible weight, And by light, we mean real light: 2,250 grams (S-Works, S-3 size, with rear shock).

Technical Specifications

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Frameset

Frame

Alloy chassis and rear-end, asymmetrical design, 29 Trail Geometry, horst pivot BB adjustment, threaded BB, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel

Seat Binder

Alloy, 38.6mm

Suspension

Rear Shock

FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, S1:190x42.5mm, S2-S6: 190x45mm

Fork

FOX FLOAT 34 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm axle, 44mm offset, 140mm of travel

Brakes

Front Brake

SRAM G2 R, 4-piston caliper, hydraulic disc, 200mm

Rear Brake

SRAM G2 R, 4-piston caliper, hydraulic disc, 180mm

Drivetrain

Shift Levers

SRAM NX Eagle, trigger, 12-speed

Rear Derailleur

SRAM NX Eagle, 12-speed

Cassette

SRAM NX Eagle, 12-speed, 11-50t

Chain

SRAM NX Eagle, 12-speed

Crankset

SRAM NX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm

Chainrings

Steel, 30T

Bottom Bracket

SRAM DUB, BSA 73mm, Threaded

Wheels & Tires

Rims

Specialized 29, hookless alloy, 30mm inner width, tubeless ready

Front Hub

Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h

Rear Hub

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

Spokes

DT Swiss Industry

Front Tire

Butcher, GRID casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"

Rear Tire

Purgatory, GRID casing, GRIPTON® T7 compound, 29x2.3"

Inner Tubes

Standard, Presta Valve

Cockpit

Stem

Alloy Trail Stem, 35mm bar bore

Handlebars

Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 780mm width

Grips

Specialized Trail Grips

Saddle

Bridge Comp, Hollow Cr-mo rails, 155/143mm

SeatPost

X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SLR LE lever, 34.9, S1: 100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm

* 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

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S1S2S3S4S5S6
Crank Length165mm170mm170mm170mm170mm175mm
Handlebar Width780mm780mm780mm780mm780mm780mm
Stem Length40mm40mm50mm50mm50mm50mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length100mm125mm150mm170mm170mm190mm
Stack (Low BB)618mm613mm623mm631mm639mm649mm
Stack (High BB)614mm609mm618mm627mm640mm644mm
Reach (Low BB)410mm430mm450mm475mm500mm530mm
Reach (High BB)416mm435mm455mm480mm505mm535mm
Headtube Length100mm100mm110mm120mm130mm140mm
Headtube Angle (Low BB)65°65°65°65°65°65°
Headtube Angle (High BB)65.5°65.5°65.5°65.5°65.5°65.5°
BB Height (Low BB)327mm332mm332mm332mm332mm332mm
BB Height (High BB)334mm339mm339mm339mm339mm339mm
BB Drop (Low BB)47mm42mm42mm42mm42mm42mm
BB Drop (High BB)40mm35mm35mm35mm35mm35mm
Trail (Low BB)126mm126mm126mm126mm126mm126mm
Trail (High BB)122mm122mm122mm122mm122mm122mm
Fork Length (full)550mm550mm550mm550mm550mm550mm
Fork Rake/Offset44mm44mm44mm44mm44mm44mm
Front Center726mm746mm770mm799mm828mm863mm
Chainstay Length (Low BB)444mm444mm444mm444mm454mm454mm
Chainstay Length (High BB)440mm440mm440mm440mm450mm450mm
Wheelbase (Low BB)1168mm1188mm1212mm1241mm1280mm1315mm
Wheelbase (High BB)1164mm1184mm1208mm1237mm1276mm1311mm
Top-tube Length (horizontal)545mm563mm586mm615mm643mm676mm
Bike Standover Height742mm742mm750mm753mm777mm784mm
Seat Tube Length385mm385mm405mm425mm445mm465mm
Seat Tube Angle (Low BB)77.7°77.7°77.5°77.2°77°76.9°
Seat Tube Angle (High BB)78.2°78.2°77.9°77.7°77.5°77.3°
Max Seatpost Insertion190mm190mm210mm230mm250mm270mm
Min Seatpost Insertion100mm100mm100mm100mm100mm100mm
Geometry

Rider Reviews

4.6

42 Reviews

 

First real MTB

This was my first real MTB full sys bike. I had it for 2 years. With more experience and riding I figured out what I wanted from a bike and moved to another brand and type of the bikes. But for time I owned this Stumpy it was perfect. One bike to do it all - great for beginners as you can try everything on it, race, jumps, bike parks, chill slow rides. It can do it all with a solid components and lock outs. The "almost basic" components on this bike are pretty good performance wise. They are simple yet good quality. This is def one of those "bang for a buc" builds. I took one star off as I do believe that price of this is a little high. With so much competition from Trek, Ibis, Norco... pretty much any LBS bike brand this seems like 500 bucks too expensive. Good thing - you can always catch it on sale


Name:
Valerii

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It's Okay

I like to run a 34t chainring, especially with the wide range cassette. The spec sheet for this bike says that it can fit a 34t ring, but only with a different offset which upsets the chain line (that caveat was not mentioned) and clearance for a 32t ring is tight. I have experienced frequent chain suck with both a 32t ring and a 34t ring that has marred the chainstay and cut into the aluminum. The chain suck was so bad with the 32t ring that the chain got stuck and snapped on the first ride. A 30t ring is stock so I would understand if it was published that that was the maximum usable size, but that is not the case. I know this sounds pretty nitpicky but this was my first brand new bike and I was disappointed when it got all scratched up from the chain on the first ride. With regards to sizing, I am 6'3" and accordingly purchased an S5 but it feels pretty stretched out and slack. If I was to buy this bike again, I would definitely get at most the S4. Solid bike otherwise.


Name:
Jack

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Hub Issue

2 Issues with rear hub in first 3 months. Second issue taking 2 months to resolve with Specialized Rider Care. Regret choosing specialized for my purchase.


Name:
Peter

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Amazing with one drawback

Pedal strike is real with this one. Never had a bike so bad for it. Outside of this it's an amazing ride both up and downhill.


Name:
Aaron

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Favorite bike ever

Got this bike as my first full sus, and I’ve been way more confident the second I got on the bike, great for tackling any kind of trail your going to ride, would highly recommend!


Name:
Kyle

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Fantastic ride

Upgraded from a really good 2012 Specialized Hardrock hardtail. I wanted to go full sus and was considering a Turbo Levo but decided to stay analog. Glad I did, the bike has been fantastic. The more I ride the more confident I get on it. There is not 1 thing I dislike.


Name:
Michael

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Impressive overall

Has been a really good bike. I've had it 2 years and it has been a tank. I'm heavier and hard on things, but has been really fun on all kinds of trails. Only real problem is the rear hub failed stripping out the drive ring. It took months to replace which may have been more dealer issue than Specialized. Finally the dealer took a wheel off another bike(not the same wheel one step down) but not until I had paid for another wheel elsewhere. Aside from that I would recommend this bike to anyone after a good trail bike!


Name:
Chris

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Nice Bike - crappy hubs

Rear hub broke twice. Warranties are great but they don't help you when you're way out in the woods and take several weeks for replacement. Not cool.


Name:
Greg

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Awesome

Love my bike. Amazing.

Would Recommend?
No

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Name:
Kevin K.

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Great bike. Rides well, easy

Great bike. Rides well, easy handling, sturdy. Well made bike!

Would Recommend?
No

Verified Buyer
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Name:
Kimble S.

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AWESOME

W bike, I used to absolutley shred black hill and is the best bike ive ever had

Would Recommend?
No

Name:
Jacob

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SUPER

Bicicleta com grande adaptação aos terrenos irregulares nas subidas ou descidas. Confortável e ajustes precisos. As condições brasileiras exigem produtos de Qualidade e a Specialized acerta em mais este produto. Cada dia melhor, os projetistas se esmeram nos equipamentos e adequação às realidades. Pena que o Brasil ainda sobretaxa as bicicletas, precisamos estimular novas tecnologias e dar alcance com bom custo benefício. Avancemos.


Name:
Marconi

Helpful?

Que máquina....

A Stumpjumper 2023 me surpreendeu! Bike super confortavel e agressiva! Sobe muito bem e desce melhor ainda, geometria perfeita! Nunca me senti tão bem em uma bike! Specialized nunca decepciona! Recomendo...


Name:
RAFAEL

Helpful?

I can't break it

The SJ is an incredibly versatile, adjustable and sturdy bike that's really opened up playing on the trail for me. That's as opposed to laying down as much speed as possible and aiming to merely survive the downhill, rooty pinball sections. My favorite use case is a long day of old school hardwoods singletrack. An absolute Cadillac on days like that. That said, firming everything up to hammer on more low key stuff is as easy as flicking switches on the fork and shock. The biggest adjustment has been how the bike rides kind of centered/weighted on the front wheel compared to the riding the rear wheel vibe of bikes I'm used to with slacker seat angles. This is in the High BB setting.

Would Recommend?
No

Name:
Grant

Helpful?

Great except hubs

Bought last year, and bike is awesome. I did purchase in offseason a bunch of XX1 and XO1 upgrades however did not realize the rear hub is Shimano HG driver so not compatible with XO1 cassette without rebuilding wheel. Not really happy the tech specs listed on this page leaves out that on the hub descriptions. Otherwise bike is great, well balanced, climbs solid, and floats; I’ll just rebuild wheels after this season so I can take full advantage of other upgrades. Weight wise I’m not missing carbon frame, it’s not terribly noticeable unless you’re doing a lot of climbing.

Would Recommend?
No

Name:
Will

Helpful?

dual suspension bike

this is my 5th dual suspension and it's the best i've ever had

Would Recommend?
No

Name:
mia

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Love this bike!!

Love this bike!!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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Great Bike for the price point

This is my first full suspension and it's been fantastic for the price. I've done about 70% single track / technical trails in Virginia and taken it on the downhill trails at Bryce resort a handful of times and it handles it with no problem. I am 6'1, 220lbs and it's a beast for anything I've thrown at it. I did have to replace and upgrade the rear derailleur and rotor after they got mangled together and unsure how. This is the S4 size. Upgrading the handlebars and stem as first upgrade as the handle bars bent in an OTB crash recently.

Would Recommend?
No

Name:
Luke

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Top Rad

Ich bin super zufrieden und vor allem mit dem Preis nur die bremsen sind so mäßig.


Name:
Clemens

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Stumpy Love... and Maintenance

This bike is a work horse. Loves fast descents and hard climbs. Beautiful geometry and structurally sound. That being said pivot bearings dried out quickly and bottom bracket bearings (SRAM DUB, BSA 73mm, threaded) gave out halfway through second season. The bike was creaking more than my 92-year-old-arthritic-grandfather! Big oversight on Specialized's part, when I discovered a missing washer between the rear shock connection and linkage arm. Specialized's awesome warranty covered this however. Love this bike.

Would Recommend?
No

Name:
Quentin

Helpful?

The perfect "not-beginner" bike

I started out on a hardtail rockhopper pro evo from 2016, great bike but wanted to try full sus. Jumped on a direct-to-consumer brand bike that was very entry level - Rockshox recon, base shimano 12-speed 1x drivetrain, and a basic dropper post. It was okay, but I wanted something that I could really grow into, get great performance out of, had a real manufacturers warranty with brick & mortar locations, and most of all was better spec'd. The comp alloy was the best of both worlds, not as expensive as carbon bikes, but still has a surprisingly light alloy frame with what I consider to be a great fork. Wish it had GX at this price range, but other than that I love the bike. Maxxis tires and you're gtg.

Would Recommend?
No

Name:
John

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Having a new blast with

Having a new blast with my new bike!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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Everything I was looking for.

Everything I was looking for.


Verified Buyer
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Name:
Derrin L.

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Nice bike. Rides great!

Nice bike. Rides great!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

Helpful?

Absolutely love this bike!!! I've

Absolutely love this bike!!! I've tried many different bikes to find the right one, and the stumpjumper had everything I wanted. Light weight bike that doesn't have the carbon price tag.

Would Recommend?
No

Verified Buyer
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Name:
Allison K.

Helpful?

Great bike!

Great bike!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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My first mountain bike was

My first mountain bike was a Specialized Hardrock and when I finally decided to upgrade to full suspension (29), I’ll be honest, I shopped around with Trek, Santa Cruz, etc. but all that did was confirm that I love Specialized. This Stumpjumper is light (to me - never rode a carbon frame), great components, and specialized has the best color selection. Great handling uphill, downhill and in between. Great bike!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

Helpful?

5 Sterne mit Upgrade auf GX Schaltwerk und Shifter

Also von dem ehemaligen Basispreis von 3000€ ausgehend bekommt man wirklich ein starkes Bike, was jedoch einfach aus Prinzip nicht mit schlechten NX Schaltwerk und Shifter ausgestattet kommen sollte ab Werk. Die aktuelle Stumpjumper Generation ist super, trotz des höheren Gewichts geht das bike wirklich gut bergauf, erst recht mit dem äußerst Easy zu blockierenden Dämpfer. Es macht einen super robusten Eindruck und hat mit 136kg Systemgewicht nochmal deutlich mehr als sein Carbon Bruder (auch das Evo Carbon). In der kurzen Geo Einstellung fährt es super handlich, geht easy in den Manual oder Bunny Hop und selbst das "einfache" Fox Fahrwerk macht einen recht potenten Eindruck, auch Problemlos Tunebar. Specialized sollte beim nächstes Modellzyklus verbessern: ab Werk einen vernünftige Schaltung auf GX Level oder Deore/Slx, das Swat Fach wie beim großen Alu Evo Bruder, und eine Geo Option mit Größerem Verstellbereich, vorallem für die Kettenstreben Länge mit einer noch kürzeren Option.


Name:
Max

Helpful?

What I expect from Specialized.

What I expect from Specialized. Great product and great customer service! Highly recommend!

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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Best bike for the money

Best bike for the money on the market.

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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Great Bike! One thing though..

This bike is awesome. It feels nimble yet has all the benefits of a full suspension. The bike is a lot of fun to ride because of it's playfulness and superior climbing. My one concern is the NX derailleur. When pedaling with force uphill there is usually a delay/clunky shifting. Just something to keep in mind.

Would Recommend?
No

Name:
Grant

Helpful?

Great bike! Efficient climber and

Great bike! Efficient climber and quick steady descender! It’s the perfect combination of what I’m looking for!

Would Recommend?
No

Verified Buyer
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Name:
Kurt A.

Helpful?

Pretty sweet

Pretty sweet

Would Recommend?
No

Verified Buyer
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Name:
Guest G.

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Great bike

I love this bike, it handles everything really well. Bike park and long pedals it does really well. All the components work great as long as they are adjusted correctly. The reason I gave it 4 stars is that the paint on my bike(I have the satin cast umber/clay colour) chips pretty easily. On the down tube and the chainstays. Next to the chain ring there is a lot of paint missing from what I think is the chain ring hitting at bottom out. Other than that it is a really good playful do it all bike.

Would Recommend?
No

Name:
Jayden

Helpful?

Great bike, one issue

I’ve had this bike for a few months now and absolutely love it, it feels really stable on whatever trails I throw at it. I did however find that when you majorly bottom out your shock that the chainring hits the chainstay, this is a massive design failure. Would still 100% recommend bike.

Would Recommend?
No

Name:
Kori E.

Helpful?

Comp alloy

Sehr gutes bike guter Preis für ein gutes Fahrrad


Name:
Severin

Helpful?

Very happy with this StumpJumper

Upgraded from an alloy StumpJumper circa about 2008. This new bike is lighter, more stable and more nimble. Dropper post easier to use than the after market version I added to the old bike. The 1x drive train is simpler to use than the old 2x version. Flat out great fun to ride on flow trail and keeps its end up over more challenging technical rocks and roots. I added a pair of Crank Bros flat pedals and am very happy with the results. Strongly recommend checking this one out if you are looking for a full suspension bike.

Would Recommend?
No

Name:
Bill

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Great bike

I have been riding a hardtail levo before the stumpy and i cant imagine going back

Would Recommend?
No

Name:
Marin

Helpful?

Awesome bike!

I had a 2019 Stumpjumper and was very happy with it, wanted a new SJ. The new advances in technology are great, this bike is so fun! The SRAM group works perfectly, the bike is set up with excellent parts! I am definitely happy with my purchase, highly recommend Specialized!

Would Recommend?
No

Name:
MountainBiker@ 5.

Helpful?

Amazing bike

Love the new bike. Been riding many different brands for years. My wife and kids have Specialized bikes so I bought one. This bike hits the mark in every category. The ride is effortless and more enjoyable than any bike I’ve been on. Takes the ride to a whole new level.

Would Recommend?
No

Name:
Sean

Helpful?

Great bike

I moved to the Stumpjumper Comp Alloy from an 8 year old full suspension. The modern geometry is fantastic and this bike is a lot more playful than my old one. I feel I can get better power down when climbing and the bike is confidence inspiring on the downhills. I have been able to progress my riding a lot over the 6 months of owning it. I'm 6'0'' 185lbs. S4 sizing is great. I was able to demo this bike before buying and tried both the S3 and S5 as well before buying. I added an MRP bash guard that has definitely been worth it. Only upgrade I would consider in the future is the brakes. They are good and entirely competent, but I had high end shimano brakes on the old bike and notice on really steep fast descents that I'd like just a little more- but this is just nit-picking. I ride in New England- plenty of rocks/roots with up and down, true "trail" bike riding. This bike is great and I hang with friends who have bikes twice this price.

Would Recommend?
No

Name:
ML

Helpful?

Love it

Love this bike, got me into serious single track riding, was able to handle anything I can throw at it including Valemount Bike Park in BC. This is something that I will ride for years to come. My bike is completely stock. The only reason I took one star of is that my rear shock has an issue with lock out switch when switch just moves from fully open into middle position on it's own. It went to Fox for warranty, will see how it goes.

Would Recommend?
No

Name:
Rarik

Helpful?

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