Decision tool
Compare up to three bikes: actual components, measurable differences, geometry in your chosen size and current HPM Sport offers.
Only bikes with a valid HPM offer and linked specifications are included.
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Specialized · MY 2025
| Specifications | Specialized Stumpjumper 15 Pro - SRAM X0 AXS, FOX Factory |
|---|---|
| Frame | |
| 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 clamp | Alloy, 38.6mm |
| Suspension | |
| Forks | FOX FLOAT 36 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel |
| 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, S1:210x52.5mm, S2-S6:210x55mm |
| Rear travel | 145 mm |
| Brakes | |
| Front brake | SRAM Maven Silver, 4-piston caliper, hydraulic disc, 200mm HS2 Rotor |
| Rear brake | SRAM Maven Silver, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 200mm HS2 Rotor |
| Motor | |
| Drivetrain | SRAM AXS POD Controller |
| Rear derailleur | SRAM X0 Eagle Transmission Derailleur |
| Cassette | SRAM X0 Eagle Transmission Cassette, 12spd, 10-52t |
| Chain | SRAM X0 Eagle Transmission Flattop Chain |
| Crankset | SRAM X0 Eagle Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm |
| Bottom bracket | SRAM DUB, BSA 73mm Wide, Threaded |
| Wheels and tyres | |
| Rims | Roval Traverse SL II, hookless carbon, 30mm inner width, tubeless ready, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29 |
| Front hub | Industry 9 1/1, 15x110mm, 28h |
| Rear hub | Industry 9 1/1, 12x148mm, 28h |
| Spokes | Sapim D-Light |
| Front tyre | Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3" |
| Rear tyre | Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3- S6: 29x2.3" |
| Inner tubes | Standard, Presta valve |
| Cockpit and contact points | |
| Stem | Industry 9 Moutain stem, 35mm clamp, 40mm length |
| Handlebars | Roval Traverse SL Carbon, riser bar, 6-degree upsweep, 8-degree backsweep, 30mm rise, S1-S2: 780mm: S3-S6: 800mm |
| Grips and bar tape | Deity Lockjaw |
| Saddle | Bridge Expert with MIMIC, Hollow Ti rails, S1-S2: 155mm, S3-S6: 143mm |
| Seatpost | Bike Yoke, Revive Max, 34.9, S1: 125mm, S2: 160mm, S3-S4: 185mm, S5-S6: 213mm |
| Accessories | |
| SWAT | SWAT 4.0 internal downtube storage |
| Weight | |
| Weight | 13.99kg |
| Weight for size | S4 |
Same size, fair comparison
| Dimension | Stumpjumper 15 Pro - SRAM X0 AXS, FOX Factory S4 |
|---|---|
| 170mm | |
| Handlebar width mm | 800mm |
| 40mm | |
| Šířka sedla | 143mm |
| 185mm | |
| 640mm | |
| 475mm | |
| 125mm | |
| 64.5° | |
| 337mm | |
| 38mm | |
| 130mm | |
| 561mm | |
| 44mm | |
| 812mm | |
| 435mm | |
| 1244mm | |
| 624mm | |
| 745mm | |
| 425mm | |
| 76.5° | |
| 780mm | |
| 255mm | |
| 80mm |
The first bike is the reference for the sign of each difference. Green and red are used only where the direction is meaningful: lower weight and higher published electric motor output. Dimensions, travel, capacity, crank length and price are differences without an automatic verdict. “—” means the manufacturer has not published the value. We show weights in kilograms; the manufacturer’s values in pounds are not displayed.
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