Specialized Stumpjumper 15 Fox Coil Alloy - 2025
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
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.
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 their 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 they pioneered. It’s the smoothest operating, most weather-resistant, flush-mounted system ever.
MORE RELENTLESS THAN YOU: Their 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. Their unbeatable lifetime, no-questions-asked replacement of suspension pivot bearings to the original owner is just one way they've got you covered.
Features
- All-new M5 alloy frame with SWAT door integration
- Robust Specialized alloy wheels with sealed cartridge bearings
- Ride Dynamics tuned FOX FLOAT Performance with Specialized GENIE patent-pending air spring technology provides maximum grip and traction found in a linear coil spring, bottom-out prevention found in a progressive air spring, and the ability to tune mid-stroke and end-stroke support independently. 2-position open and firm damper adjustments.
- Eat up the chunkiest trails with the FOX FLOAT 36 Rhythm fork with GRIP damper
- Performance-focused and durable Shimano SLX drivetrain
- Big stopping power from TRP Trail EVO 4-piston brakes
- Trustworthy time and time again X-Fusion Manic dropper post
- Lifetime replacement of suspension pivot bearings to the original owner
Tech Specs
| Frame Material: | Aluminum |
| Wheel Size: | Mixed: 29" front/27.5" rear |
| Rear Axle Standard: | 12x148mm Boost |
| Rear Shock: | FOX DHX Factory, Ride Dynamics Trail Tune, 210x55mm, S2: 400lbs, S3: 450lbs, S4: 500bs, S5: 550lbs, S6: 600lbs |
| Rear Shock Size: | 210mm x 55mm |
| Rear Suspension Travel: | 145mm |
| Fork: | FOX FLOAT 38 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, 160mm of travel |
| Fork Axle: | 15x110mm Boost |
| Wheelset: | Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: 27.5 |
| Front Tire: | Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3" |
| Rear Tire: | Eliminator, GRID GRAVITY casing, GRIPTON® T9/T7 compound, 2Bliss Ready, 27.5x2.3" |
| Crankset: | Shimano SLX, M7120, 32T ring, 55mm chainline, S2-S3:165mm, S4-S6: 170mm |
| Chainguide Tabs: | ISCG '05 3-Bolt |
| Bottom Bracket: | Shimano, BB-MT801, Threaded |
| BB Standard: | 73mm BSA |
| Chain: | Shimano SLX, M7100, 12-speed |
| Rear Derailleur: | Shimano SLX, M7100, SGS, 12-speed |
| Cassette: | Shimano SLX, CS-M7100, 12-speed, 10-51t |
| Seatpost: | PNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S2: 150mm, S3: 170mm, S4-S6: 200mm |
| Seat Post Diameter: | 34.9mm |
| Seat: | Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm |
| Shifters: | Shimano SLX, M7100, 12spd |
| Handlebar: | Deity, Racepoint, 5-degree upsweep, 9-degree backsweep, 810 width, S2: 25mm rise: S3-S6: 38mm rise |
| Stem: | Deity, 35mm clamp, 35mm length |
| Grips: | Deity, Knuckleduster, Black |
| Brakes: | Front: TRP DH-R EVO, 4-piston caliper, hydraulic disc, 220mm Rear: TRP DH-R EVO, 4-piston caliper, hydraulic disc, 203mm |
| Intended Use: | Trail/AM |
Specs subject to change without notice. Please check with manufacturer for the most up-to-date information.
Geometry
mm / inches
Insertion
Sizing
cm / ft
| Size | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Rider Height (cm) | 150 - 160 | 157 - 173 | 165 - 180 | 173 - 188 | 177 - 193 | 188 - 198 |