To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The Specialized Stumpjumper 15 Alloy is the ultimate trail bike, combining efficiency, customisation, and durability to tackle any terrain with confidence and control.
The Specialized Stumpjumper 15 Alloy is the ultimate trail bike, combining efficiency, customisation, and durability to tackle any terrain with confidence and control.
Specialized

2025 Specialized Stumpjumper 15 Alloy Mountain Bike - Satin Cast Blue

£2,750.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

2025 Specialized Stumpjumper 15 Alloy Mountain Bike - Satin Cast Blue

Season:2025

Brand:Specialized

Code:42762395437115

Specialized Stumpjumper 15 Alloy Mountain Bike: Trail Mastery Redefined

The Specialized Stumpjumper 15 Alloy Mountain Bike is engineered to conquer any trail with unparalleled versatility. Whether you're tackling big bumps, enjoying short-travel control, or seeking efficient climbing, this bike delivers it all. Personalise it for your perfect ride because you’re the rider that matters.

Precision-Tuned Kinematics for Ultimate Efficiency. The Stumpjumper 15 Alloy perfectly balances pedaling efficiency with optimal bump absorption. With anti-squat dialed in between the proven Stumpjumper and Stumpjumper EVO, this bike ensures smooth pedaling on all terrain, offering exceptional control and performance.

Optimised Geometry for All Terrain. This trail bike’s refined geometry provides the capability of a big bike while remaining nimble in tight sections. A low bottom bracket, slack head tube angle, and optimised fork offset give you stability on rough trails, while the roomy cockpit keeps you centered for superior traction and cornering precision.

Customisable for Your Riding Style. With six adjustable geometry settings, the Stumpjumper 15 Alloy is the most personalisable trail bike on the market. Fine-tune the head angle and bottom bracket height to match your terrain or style, delivering performance that adapts to every trail.

Engineered for Fun and Compliance. Specialized have crafted the M5 Alloy frame as a single integrated unit to achieve optimal stiffness without sacrificing compliance. The front and rear ends, connected by a precision-engineered link, ensure that your bike handles rough trails with ease while maintaining the playfulness and control you need.

Mixed Wheels for Versatility. All coil-sprung models come equipped with mixed wheels for ultimate performance. You can also choose between full-size wheels or a 27.5” rear wheel for a more playful and responsive ride using aftermarket shock links without impacting the bike’s geometry.

SWAT Storage for On-Trail Essentials. Carry more with Specialized’s innovative SWAT storage system, integrated into the downtube for seamless gear storage. Keep your tools, tubes, or snacks ready for the trail without the need for additional packs.

Built for Durability and Long-Lasting Performance. Specialized full-suspension bikes, like the Stumpjumper 15 Alloy, are designed for years of hard riding. Backed by a lifetime suspension pivot bearing replacement for the original owner, you can ride with confidence, knowing you're covered by Specialized’s legendary support.

  • All-new M5 alloy frame with integrated SWAT door storage for carrying gear.
  • Ride Dynamics-tuned X-Fusion 02 Pro RL shock, offering adjustable rebound and lockout for precise suspension performance.
  • RockShox Psylo Silver fork with Motion Control Damper for smooth handling on rough terrain.
  • Dependable Shimano MT-420 4-piston brakes for powerful, responsive stopping.
  • 12-speed Shimano Deore drivetrain for reliable, efficient shifting.
  • Lifetime replacement of suspension pivot bearings for the original owner.

The Specialized Stumpjumper 15 Alloy is the ultimate trail bike, combining efficiency, customisation, and durability to tackle any terrain with confidence and control.

Technical Information
  • 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
  • Seat Binder
    Alloy, 38.6mm
  • Rear Shock
    X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210x52.5mm, S2-S6:210x55mm
  • Fork
    RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel
  • 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
  • Stem
    Alloy Trail Stem, 35mm bar bore
  • Handlebars
    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
  • Grips
    Specialized Trail Grips
  • Front Brake
    Shimano, BR-MT420, 4-piston caliper, hydraulic disc, 203mm
  • Rear Brake
    Shimano, BR-MT420, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm
  • Rear Derailleur
    Shimano Deore, M6100, 12pd, Shadow Plus
  • Shift Levers
    Shimano Deore, M6100, 12spd
  • Cassette
    Shimano Deore, M6100, 12spd w/Hyperglide+, 10-51t
  • Chain
    Shimano Deore, M6100, 12-speed
  • Crankset
    Shimano Deore, M6120, 30T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm
  • Rims
    Specialized Alloy, Tubeless Ready, 29mm internal width, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29
  • Front Hub
    Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h
  • Rear Hub
    Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
  • Spokes
    Stainless, 14g
  • Front Tyre
    Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
  • Rear Tyre
    Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3- S6: 29x2.3"
  • Inner Tubes
    Standard, Presta valve
  • SWAT
    SWAT internal downtube storage
  • Weight
    16.57 kg (36 lb, 8.5 oz)
  • Weight Size
    S4
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying. Please note that this bike does not come with pedals.
Sizing Information

SIZING

Size in ft4'11" - 5'3"5'2" - 5'8"5'5" - 5'11"5'8" - 6'2"5'10" - 6'4"6'2" - 6'8"
Size in cm150 - 160cm158 - 173cm165 - 180cm173 - 188cm178 - 193cm188 - 203cm
Equivalent to Bike SizeXSSMLXLXXL
Bike SizeS1S2S3S4S5S6

STUMPJUMPER, STUMPJUMPER EVO (STYLE SPECIFIC-SIZING) MY21 SIZING GUIDE

S-Sizing is based on what matters; rider size and style, not inseam. Six sizes, all with similar headtube lengths and standover allow you to choose the size that best suits your individual style. Smaller S-Size numbers are going to be more nimble, thanks to their shorter reach and front-centre measurement, while bigger S-Sizes deliver more stability and a roomier ride.

  • SIZE DOWN FOR MORE MANEUVERABILITY
  • SIZE UP FOR MORE STABILITY

GEOMETRY

SizeS1S2S3S4S5S6
BB Drop41mm38mm38mm38mm38mm38mm
BB Height334mm337mm337mm337mm337mm337mm
Bike Standover Height738mm751mm745mm745mm745mm751mm
Chainstay Length430mm432mm435mm435mm445mm445mm
Fork Length, Full551mm561mm561mm561mm561mm561mm
Fork Rake/Offset44mm44mm44mm44mm44mm44mm
Front Centre720mm751mm780mm812mm843mm879mm
Head Tube Angle64.5°64.5°64.5°64.5°64.5°64.5°
Head Tube Length95mm100mm110mm125mm140mm155mm
Reach400mm425mm450mm475mm500mm530mm
Seat Tube Angle78°77°77°76.5°76.5°76.5°
Seat Tube Length385mm385mm405mm425mm445mm465mm
Stack608mm618mm627mm640mm654mm667mm
Trail129mm130mm130mm130mm130mm130mm
Wheelbase1149mm1181mm1213mm1244mm1285mm1322mm
Top Tube Length, Horizontal541mm573mm595mm624mm647mm677mm
Crank Length165mm165mm165mm170mm170mm170mm
Handlebar Width780mm780mm800mm800mm800mm800mm
Stem Length40mm40mm40mm40mm40mm40mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length125mm150mm170mm200mm200mm200mm
Max Seatpost Insertion245mm245mm255mm255mm285mm285mm
Min Seatpost Insertion80mm80mm80mm80mm80mm80mm
Saddle Height for Effective ST Angle645mm690mm735mm780mm825mm870mm
Professional Opinion
Home Mountain Biking Bikes Specialized Mountain Bikes