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Today’s Deals2025 Specialized
Stumpjumper 15 Alloy
A 29″ / 27.5″ aluminum frame full suspension trail bike with upper mid-range components.
Manufacturer Price
$2,199| Weight | 36.5 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 145 / 150mm |
| Fork | RockShox Psylo |
| Shock | X-Fusion |
| Wheels | 29″ / 27.5″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | Deore |
| Brakes | Shimano Hydraulic Disc |
| Seatpost | Dropper |
4'11" – 5'3"
5'2" – 5'8"
5'5" – 5'11"
5'7" – 6'3"
5'10" – 6'4"
6'2" – 6'8"
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Summary
The Specialized Stumpjumper 15 is a versatile trail bike praised for its adjustable geometry, excellent suspension performance with the GENIE shock, and practical features like SWAT storage. It offers a comfortable and confident ride, suitable for a wide range of trail conditions. While it excels in handling and adaptability, some reviews note its high entry price and limitations in drivetrain compatibility.
Adjustable geometry for versatile riding
GENIE shock offers impressive traction and small bump sensitivity
Practical frame design with SWAT storage
Comfortable and confident ride quality
Excellent suspension performance
High entry price
No derailleur cable routing, limiting drivetrain options
Some builds may have underperforming stock components
Out on the trail, this is a really easy bike to love.
BIKE MagazineThe new Stumpjumper is a brilliant trail bike, and the GENIE shock is a big part of that brilliance.
Flow Mountain BikeThe Specialized Stumpjumper 15 truly has the potential to truly be a 'one bike for everything'.
Loam WolfFeedback?
View all reviews
Feb 2025
The latest Specialized Stumpjumper impresses with increased travel, a proprietary shock, and innovative design tweaks
Genie shock offer impressive grip and small bump sensitivity
Well-rounded, easy to get along with geometry (that’s also widely adjustable)
Large in-frame storage compartment
Not an exceptional value
No derailleur cable routing
Wireless shifting only
Aug 2025
Specialized EVO'd the Stumpy 15, making it a lot more interesting as a Shore-worthy trail bike.
Beautiful paint job
Genie shock offers tunable platform
Shimano XTR Di2 drivetrain
Roval Traverse SL II wheels with I9 Hydra 2 hubs
Comfortable S-Works Power Pro saddle with Mirror
Fox Transfer NEO dropper post works flawlessly
SWAT tool integration
Bike is quick in flat and fast terrain
Composed in steep terrain
Rear tire casing (Grid Trail) feels undergunned
Fox 36 fork flexes under heavy rider
XTR brakes not as powerful as SRAM Maven
Rear brake had contamination issue
800mm bar width on all sizes is inappropriate for smaller sizes
No internal shift cable routing on carbon frame
High price
Mar 2025 · Ron Koch
If you want a platform to keep your stable small and something to cover virtually all of your bases, the Stumpjumper 15 might be the ticket. Explore our in-depth long-term review of the Specialized Stumpjumper 15. Featuring the new Genie shock, adjustable geometry, and updated frame design, it blends climbing efficiency with downhill confidence for modern trail riders.
Mar 2025 · Calum Ross & Robert Johnston
The Specialized Stumpjumper 15 has the potential to truly be a “one bike for everything”. Fond out how it stacks up in this review.
Dec 2024 · Joshua Hutchens
If you replace your iPhone every year, you'll be wowed by the improvements in the new Stumpjumper. Like Apple's flagship communication device, this trail...
Genie shock
Upgraded frame storage
Adjustable geometry
200mm native rear brake
Only minor changes from past model
Dec 2024 · Jeff Barber
The Stumpjumper 15 brings new GENIE shock technology to the venerable trail bike, which sees more travel and further refinements.
Incredible suspension performance thanks to GENIE shock tech
Excellent fit and geometry
Build kit is on point and delivers excellent value
Refined frame design and features
Stock wheels on the Comp build are under-gunned for the Stumpy’s capabilities
Nov 2024 · Dario DiGiulio
The alloy Stumpy packs a punch for the price, and you can run a cable-actuated derailleur.
Suspension is impressively sensitive
Extensive adjustment to alter geometry, wheel size, and shock performance
Can descend like a bigger bike
Quite heavy for a trail bike, due primarily to frame weight
Genie shock warrants extended setup testing
Can be hard to balance sensitivity and support
Sep 2024 · Steve Fisher
Specialized introduces the Stumpjumper 15 Alloy, borrowing some high-tech goodness from the carbon version but at more attainable prices.
| Frame | M5 Alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel BB Standard: BSA, 73mm, Threaded Hanger Standard: UDH Colors: Gloss White Mountains / Dark Moss Green; Satin Cast Blue / Dove Grey |
|---|---|
| Fork | RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel Travel: 150mm |
| Shock | X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210x52.5mm, S2-S6:210x55mm Travel: 145mm |
| Bottom Bracket | BSA, 73mm, threaded |
| Stem | Alloy Trail Stem, 35mm bar bore |
| Handlebar | Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2: 780 width, 20mm rise: S3-S4: 800 width, 30mm rise: S5-S6: 800 width, 40mm rise |
| Saddle | Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm |
| Seatpost | TranzX Dropper, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm Type: Dropper |
| Grips | Specialized Trail Grips |
| Rear Derailleur | Shimano Deore, M6100, 12pd, Shadow Plus |
|---|---|
| Crank | Shimano Deore, M6120, 30T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm |
| Shifters | Shimano Deore, M6100, 12spd |
| Cassette | Shimano Deore, M6100, 12spd w/Hyperglide+, 10-51t |
| Chain | Shimano Deore, M6100, 12-speed |
| Brakes | Front: Shimano, BR-MT420, 4-piston caliper, hydraulic disc, 203mm, Rear: Shimano, BR-MT420, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm Type: Shimano Hydraulic Disc |
| Rims | Specialized Alloy, Tubeless Ready, 29mm internal width, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29 |
|---|---|
| Spokes | Stainless, 14g |
| Front Hub | Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h |
| Rear Hub | Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h |
| Tires | Front: Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3", Rear: Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3- S6: 29x2.3" |
First added September 17
Last updated June 27