Specialized Stumpjumper 15 Expert Mountain Bike 2025
The Stumpjumper 15 sets a new benchmark in trail riding, eliminating trade-offs with its ability to handle bumps like a larger bike while maintaining the agility and efficiency of a short-travel design. Featuring GENIE Shock Technology for a lively, bottomless DH feel, it surpasses the traction of the acclaimed "Bike of the Year" Stumpjumper EVO. With extensive personalization options including six-way geometry adjustment, mixed wheel or 29" compatibility, and a tunable spring curve, it caters to every rider's preferences.
GENIE combines the best attributes of coil and air springs, offering supple performance with enhanced bottom-out prevention and tunability. It manages bump forces 16.3% better than traditional air shocks and reduces bottom-outs by 39%, ensuring a smooth ride even during aggressive maneuvers. The bike's honed geometry optimizes stability and maneuverability with features like a low bottom bracket and slack head tube angle, enhancing cornering and traction.
Designed for versatility, the Stumpjumper 15 accommodates different wheel sizes without compromising geometry integrity through aftermarket shock links. SWAT 4.0 provides advanced downtube storage, and the FACT 11m carbon chassis ensures lightweight durability. Equipped with a Ride Dynamics tuned FOX FLOAT Performance Elite shock and FOX FLOAT 36 Performance Elite fork with GRIP X2 damper, it offers precise control over varied terrain. The SRAM GX Eagle T-Type AXS drivetrain and Maven Bronze 4-piston brakes deliver reliable performance, complemented by the adjustable travel PNW LOAM dropper post for on-the-fly adjustments.
Backed by a commitment to durability and customer satisfaction, including lifetime replacement of suspension pivot bearings, the Stumpjumper 15 is compatible exclusively with electronic drivetrains, making it the ultimate choice for discerning riders seeking uncompromising performance and customization options.
Technical Specification
| SWAT | 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 |
| Fork | FOX FLOAT 36 Performance Elite, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, S1 |
| Rear Shock | FOX FLOAT Performance Elite with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/3 setting Open mode tuning range, LSR adjustment, S1 |
| Stem | Alloy Trail Stem, 35mm bar bore |
| Saddle | Bridge Comp, Hollow Cr-mo rails, S1-S2 |
| Grips | Deity Lockjaw |
| Handlebars | Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2 |
| SeatPost | PNW Loam Dropper, tool-less travel adjust, Range lever, 34.9, S1 |
| Front Brake | SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm HS2 Rotor |
| Rear Brake | SRAM Maven Bronze, 4-piston caliper, hydraulic disc, S1-S2 |
| Chain | SRAM GX Eagle Transmission Flattop Chain |
| Cassette | SRAM GX Eagle Transmission Cassette, 12spd, 10-52t |
| Bottom Bracket | SRAM DUB, BSA 73mm Wide, Threaded |
| Shift Levers | SRAM AXS POD Controller |
| Crankset | SRAM GX Eagle Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3 |
| Rear Derailleur | SRAM GX Eagle Transmission Derailleur |
| Rims | Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front |
| 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, 28h |
| Rear Tire | Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2 |
| Spokes | Sapim Force |
| Inner Tubes | Standard, Presta valve |
| Weight | 14.47kg (31 lb, 14.4 oz) |
| Weight Size | S4 |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Specialized Stumpjumper 15 Expert Mountain Bike 2025 Sizing
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