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The Stumpjumper 15 Alloy is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check.
The Stumpjumper 15 Alloy is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check.
Specialized

2025 Specialized Stumpjumper 15 Alloy Fox Coil Mountain Bike in Silver

£5,000.00
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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
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Hassle free returns

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged. In the event an item is returned to ourselves in an unsuitable condition, we may have to return the item or offer a partial refund. Unless the return is due to a faulty product or an incorrect delivery on our part you will have to cover the cost of the return. If you believe that we should be covering the cost of the return please contact us in advance to discuss the available options.

In line with the customer rights act 2015 if you receive an item that is faulty, of un-satisfactory quality, unusable or that differs from how the product is described you are entitled to return the item for a full refund within 30 days of purchase.

Small Items - Parts & Accessories

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Larger Items - Bikes / Bulky Items

If you wish to return bikes or bulky items such as forks or turbo trainers please contact our Returns Department to arrange a special courier collection. Contact us on our email address websales@99bikes.co.uk We can arrange collection for you from your home or work address, using our couriers ( You may be required to cover postages costs )

* Bulky Items Include - Bikes - Wheels/wheelsets - Turbo Trainers - Framesets - Forks - Groupsets - Car racks - Child Seats

Warranty Claims

Please contact us prior to returning so we can ensure the fastest suitable resolution for you: websales@99bikes.co.uk. We also ask that you contact us before having a 3rd party undertake work on an item purchased from 99 Bikess. Any work carried out without 99 Bikes consent will not be eligible for reimbursement and may void future warranty claims for that item.

2025 Specialized Stumpjumper 15 Alloy Fox Coil Mountain Bike in Silver

Season:2025

Brand:Specialized

Code:42577865396483

The Stumpjumper 15 Alloy is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters—you? Check, check, check.


KINEMATICS PERFECTED: As the quintessential trail bike, Stumpjumper 15 Alloy balances efficiency and optimal bump force management. For the anti-squat on Stumpjumper 15 Alloy, we struck a balance between the previous Stumpjumper and Stumpjumper EVO, as both had excellent pedaling characteristics.


HONED GEOMETRY: This bike’s geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockpit centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough.


RIDE YOUR WAY: The Stumpjumper 15 Alloy seamlessly integrates benchmark geo adjustability, making it the most personalizable trail bike ever. Six distinct geometry settings allow you to hone performance for any style and any terrain. The head angle and bottom bracket can be fine-tuned for stability or clearance.


FORM FOLLOWS FUN: We can make a frame as stiff as we want, but there’s such a thing as too stiff. To be one with the bike requires engineered compliance in the frame. We engineered the M5 Alloy chassis—front end, rear end, and the link between them—as a single unit that hits the stiffness target we established for trail riding.


WHEEL SIZE: All coil-sprung models come with mixed wheels.


WHEEL CHOICE: With our aftermarket link shock links, you can choose between big wheels front and rear or mix things up with a 27.5” rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.


CARRY IT ALL: SWAT on Stumpjumper 15 elevates downtube storage, an innovation we pioneered.


MORE RELENTLESS THAN YOU: Our full-suspension bikes are built to be relentless, designed to endure years of hard riding, and backed by the best support and programs to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement suspension pivot bearings to the original owner is just one way we've got you covered.

Key Features:

  • All-new M5 alloy frame with SWAT door integration
  • Roval Traverse alloy wheels with DT Swiss hubs
  • Ride Dynamics Tuned FOX DHX Factory coil shock
  • Beefy FOX FLOAT 38 Factory fork with GRIP X2 damper
  • Performance-focused and durable Shimano SLX drivetrain
  • Big stopping power from TRP Trail EVO 4-piston brakes
  • Adjustable travel PNW LOAM dropper post
  • Lifetime replacement of suspension pivot bearings to the original owner
All UK Mainland Bike Deliveries Over £999 - Free

Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).
Bike orders under £999 will incur a £20 delivery fee

Free Delivery On Orders Over £50.00

When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).

Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders

Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

Spread the cost of your new bike, helmet, safety equipment and accessories paying via instalments being taken directly from your wage. The payments for the Cycle To Work scheme are taken out of your gross wage and your Tax & NI contributions are then worked out based on your new lower gross wage which is how you save money on your new bike and equipment.

At the end of the time period specified with your Cycle To Work scheme you then have the option of buying your bike or to continuing to use it while you work for the company. If you decide to purchase the bike, the balance you owe will be based on a percentage of how much the bike was worth at the time you took out the Cycle To Work scheme.

We know how eager you'll be to jump on your new bike and hit the dirt or tarmac, so we give you everything you need to get you set up quickly. For full instructions on how you're bike will arrive and what you'll need to do, visit our How Our Bikes Are Built page

Easy Set-Up Instructions

Have your brand spanking new bike ready to ride in less than 15 minutes with our easy to follow guide.

Free Multi-Tool

9 in 1 multi-tool to help you set up and maintain your bike.

Free Pedal Spanner

Attach your pedals with ease using our free tool. Please note pedals are not included with all bikes so please check the specification. You can shop our awesome range of pedals HERE

Technical Information

Chain: Shimano SLX, M7100, 12-speed

Bottom Bracket: Shimano, BB-MT801, Threaded

Crankset: Shimano SLX, M7120, 32T ring, 55mm chainline, S2-S3:165mm, S4-S6: 170mm

Rear Derailleur: Shimano SLX, M7100, SGS, 12-speed

Cassette: Shimano SLX, CS-M7100, 12-speed, 10-51t

Shift Levers: Shimano SLX, M7100, 12spd

SWAT: SWAT internal downtube storage

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: FOX DHX Factory, Ride Dynamics Trail Tune, 210x55mm, S2: 400lbs, S3: 450lbs, S4: 500bs, S5: 550lbs, S6: 600lbs

Fork: FOX FLOAT 38 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, 160mm of travel

Front Brake: TRP DH-R EVO, 4-piston caliper, hydraulic disc, 220mm

Rear Brake: TRP DH-R EVO, 4-piston caliper, hydraulic disc, 203mm

Rims: Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: 27.5

Front Hub: DT Swiss 370, 15x110mm, 28h

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

Rear Hub: DT Swiss 370, 12x148mm, 32h

Rear Tire: Eliminator, GRID GRAVITY casing, GRIPTON® T9/T7 compound, 2Bliss Ready, 27.5x2.3"

Spokes: Sapim Force

Inner Tubes: Standard, Presta valve

Saddle: Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm

Stem: Deity, 35mm clamp, 35mm length

Grips: Deity, Knuckleduster, Black

Handlebars: Deity, Racepoint, 5-degree upsweep, 9-degree backsweep, 810 width, S2: 25mm rise: S3-S6: 38mm rise

SeatPost: PNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S2: 150mm, S3: 170mm, S4-S6: 200mm

Product ID: 257786

Weight: 16.90 kg (37 lb, 4.1 oz)

Weight Size: S4

Sizing Information

Specialized Bikes Size Guide

Please note the following size guides are a general overview and represent a rough guide to Specialized Bicycles sizing.
Each bike may deviate from these figures, please refer to the specific geometry details or contact us for more precise sizing.


Specialized Mountain Bike Size Guide (including Turbo E-Bikes)

SizeXSSMLXLXXL
Height (cm)147 - 155157 - 168167 - 178166 - 188185 - 193193 - 198


Specialized Road and Gravel Bike Size Guide

Size444950525456586164
Height (cm)142 - 155155 - 163157 - 162162 - 170170 - 175175 - 180180 - 188187 - 196195 - 206


Specialized Hybrid Bike Size Guide

SizeXXSXSSMLXLXXL
Height (cm)142 - 150149 - 157155 - 165165 - 175175 - 189188 - 193193 - 198
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