Specalized S-Works Stumpjumper 15 Mountain Bike 2025
The Stumpjumper 15 is here to revolutionize trail riding by eliminating every trade-off. With GENIE Shock Technology, it combines a playful ride with a bottomless DH feel, delivering 16.3% better bump force management and 57% better traction than standard air shocks. The six-way geometry adjustment, mixed wheel or 29” options, and tunable spring curve provide unmatched personalization. The lightweight FACT 11m carbon chassis, Roval Traverse SL II wheels, SRAM XX Eagle T-Type AXS drivetrain, and RockShox Reverb AXS dropper post ensure top-tier performance. Additionally, SWAT 4.0 downtube storage and a lifetime replacement of suspension pivot bearings highlight its practical design. This bike’s geometry, featuring a low bottom bracket and slack head tube angle, offers stability and nimbleness, making the Stumpjumper 15 the ultimate trail machine.
Technical Specification
| SWAT | SWAT 4.0 internal downtube storage |
| Frame | FACT 11m carbon chassis, rear-end, and link, 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 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, S1 |
| Rear Shock | FOX FLOAT Factory with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/3 setting Open mode tuning range, LSR adjustment, S1 |
| Stem | Deity, 35mm clamp, 35mm length |
| Grips | Deity Lockjaw |
| Handlebars | Roval Traverse SL Carbon, riser bar, 6-degree upsweep, 8-degree backsweep, 30mm rise, S1-S2 |
| SeatPost | RockShox, Reverb AXS, 30.9, S1 |
| Saddle | Power Pro Mirror, Hollow Ti rails, S1-S2 |
| Front Brake | SRAM Maven Ultimate, 4-piston caliper, hydraulic disc, 200mm HS2 Rotor |
| Rear Brake | SRAM Maven Ultimate, 4-piston caliper, hydraulic disc, S1-S2 |
| Cassette | SRAM XX Eagle SL Transmission Cassette, 12spd, 10-52t |
| Bottom Bracket | SRAM DUB, BSA 73mm Wide, Threaded |
| Shift Levers | SRAM AXS POD Ultimate Controller |
| Crankset | SRAM XX Eagle Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3 |
| Rear Derailleur | SRAM XX Eagle Transmission Derailleur |
| Chain | SRAM XX Eagle SL Transmission Flattop Chain |
| Rims | Roval Traverse SL II, hookless carbon, 30mm inner width, tubeless ready, 28h, Front |
| Front Hub | DT Swiss 240, 15x110mm, 28h |
| Front Tire | Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3" |
| Rear Hub | DT Swiss 240, 12x148mm, 28h |
| Rear Tire | Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2 |
| Spokes | DT Swiss Aerolite |
| Inner Tubes | Standard, Presta valve |
| Weight | 13.56kg (29 lb, 14.3 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.
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Why buy your bike from Sigma Sports?
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