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Stumpjumper 15 is here to obliterate every trade-off in the trail game.
Stumpjumper 15 is here to obliterate every trade-off in the trail game.
Specialized

Specialized Stumpjumper 15 Comp Alloy Mountain Bike in Smoke/Grey

£3,750.00
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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
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Hassle free returns

Returns

In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 30 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note.

It is your responsibility to ensure that the item is returned to us in a safe and secure manner, and in the event of a refund or exchange, in saleable condition (in original packaging and including all warranty, cards, manuals and accessories).

Customers are accountable for return shipping charges.

If you purchased an item in one of our stores, you may return the items to either of our stores.

Return Items by Post

  1. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.
  2. Send your package using a recorded delivery method (always keep a copy of your receipt!) to the following address.
South Downs Bikes
Internet Department
28 West Street
Storrington
West Sussex
RH20 4EE

If you wish to return your bike to us please keep it in the box it arrived in and contact us and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Specialized Stumpjumper 15 Comp Alloy Mountain Bike in Smoke/Grey

Season:2025

Brand:Specialized

Code:42213975366729

Stumpjumper 15 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.

BREAKTHROUGH CAPABILITY: GENIE Shock Technology combines a poppy, playful ride with a bottomless DH feel.

ULTIMATE CONTROL: Measurably better traction than “Bike of the Year” Stumpjumper EVO.

UNMATCHED PERSONALIZATION: Six-way geometry adjustment, mixed wheel or 29”, tunable spring curve, and more.

GENIE—The Magic Carpet Ride: The biggest innovation on the Stumpjumper 15 is GENIE. This patent-pending air spring technology that we invented grants every trail rider’s three wishes: the feel and control of a coil spring, better bottom-out prevention than a standard air spring, and a tunable “platform” for a playful feel.

ILLUMINATING GENIE: GENIE combines the control-enhancing linear spring rate of a coil spring through the “bump zone” with the progressive spring rate of an air spring at the end of the stroke to avoid bottom-outs. Truly, it's the best of both worlds – coil and air – with extra tunability. Say goodbye to compromises and hello to the future of riding.

WHAT BUMP?: With 16.3% better bump force management than a traditional air-sprung shock, GENIE makes the Stumpy 15 ride like a bike with more travel. For example, the Stumpjumper 15 (with 145 mm rear wheel travel) and our Enduro (170 mm travel) both use 101 mm of travel to absorb a 1080 N bump force.

TRACTION GALORE: Extensive field testing proves that Stumpjumper 15 with GENIE delivers 57% better traction than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would.

BYE, BYE, BOTTOM-OUTS: 39% fewer bottom-outs than a standard air spring. During big hit events, you benefit from the rising rate in the last 30% of the GENIE stroke. Because of this two-stage, pronounced rising rate, GENIE reduces the frequency and severity of bottom-outs.

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 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, any terrain. Head angle and bottom bracket height can be fine-tuned for stability or clearance.

WHEEL CHOICE: With our aftermarket 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 4.0 on Stumpjumper 15 elevates downtube storage, an innovation we pioneered. It’s the smoothest operating, most weather-resistant, flush-mounted system ever.

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 policies to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement of suspension pivot bearings to the original owner is just one way we've got you covered.

Features:
  • Lightweight FACT 11m carbon chassis and rear-end
  • Robust Specialized alloy wheels with sealed cartridge bearings
  • Ride Dynamics tuned FOX FLOAT Performance with Specialized GENIE Shock Tech. 2-position open and firm damper adjustments
  • Eat up the chunkiest trails with the FOX FLOAT 36 Rhythm fork with GRIP damper
  • Smooth and precise shifting from SRAM Eagle T-Type AXS drivetrain
  • Big braking power from SRAM Maven Bronze 4-piston brakes
  • Trustworthy time and time again X-Fusion Manic dropper post
  • Lifetime replacement of suspension pivot bearings to the original owner
  • Compatible with electronic drivetrains only
Technical Information
  • Frameset
    SWAT
  • Swat 4.0 Internal Downtube Storage
    SWAT 4.0 internal downtube storage
  • Frame
    FACT 11m carbon chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal brake and dropper cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel
  • Seat Binder
    Alloy, 38.6mm
  • Rear Shock
    FOX FLOAT Performance with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/ LSR adjustment, S1:210x52.5mm, S2-S6:210x55mm
  • Fork
    FOX FLOAT 36 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel
  • Front Brake
    SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm
  • Rear Brake
    SRAM Maven Bronze, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 200mm
  • Shift Levers
    SRAM AXS POD Controller
  • Rear Derailleur
    SRAM S1000 Eagle Transmission Derailleur
  • Cassette
    SRAM XS-1270 Transmission Cassette, 12spd, 10-52t
  • Chain
    SRAM GX Eagle Transmission Flattop Chain
  • Crankset
    SRAM S1000 Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm
  • Bottom Bracket
    SRAM DUB, BSA 73mm Wide, Threaded
  • Rims
    Specialized, hookless alloy, 30mm inner width, tubeless ready, 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
    DT Swiss Industry
  • Front Tire
    Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
  • Rear Tire
    Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3-S6: 29x2.3"
  • Inner Tubes
    Standard, Presta valve
  • 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
  • Saddle
    Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm
  • Seatpost
    X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 190mm
  • Pedals
    PEDAL, TEST RIDE PEDALS PROVIDED BY SPECIALIZED
  • Product ID
    221395
  • Weight
    14.87kg (32 lb, 12.5 oz)
  • Weight Size
    S4
Sizing Information
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