43 years after the original launched in 1981, the 15th iteration of the iconic Specialized Stumpjumper has been revealed. The new range features five models (that includes an Ohlins Coil version), plus an S-Works frameset and shock. The more capable Stumpjumper EVO has been axed, but the standard full-suspension MTB gets a boost in travel from 140/130mm (front/rear) to 150/145mm – except for the size S1 which is 140/140mm.
As well as the change in suspension travel, the other headline news for the 2025 Stumpy is Specialized's new GENIE tech. This uses a Ride Dynamics modded Fox Factory Float shock on the S-Works, Pro, Expert and Comp models to give "16.3 percent better bump force management and 39 percent fewer severe bottom-outs compared to a standard air-sprung shock" according to Specialized.
Like the previous incarnation, the carbon-framed bikes feature plenty of geometry adjustments. The head angle can be adjusted by altering an eccentric upper headset cup to give three positions – 63, 64.5, and 65.5 degrees. The bottom bracket height can also be altered from 337mm to 330mm via a flip-chip in the Horst suspension link. Depending on the size chosen, bikes either come with twin 29in wheels or mullet (29in front and 27.5in rear), but changing a suspension link (available as an additional extra) will let you run either wheel configuration. Specialized also uses four different chain stay lengths across the size range, starting with 430mm on the S1 (with 27.5in wheels) and going up to 445mm for the S5 and S6.
For the size S4 (aka large size) the rest of the geometry stacks up as 475mm reach, 640mm stack, 125mm head tube length, and a 1,244mm wheelbase. Weight-wise, we've only been able to get the Pro model we've tested on the scales so far – more on that below. That weighed in at a respectable 14.1kg / 31lbs for the size S4.
All the bikes feature wireless SRAM Transmission AXS drivetrains ranging from XX Eagle SL on the S-Works to the recently revealed S-1000 version on the Comp model. However, somewhat controversially, that means there are no frame holes or routing for a conventional wired rear mech. Similarly, if you fancy running a lesser rear rotor than the supplied 200mm option for the powerful Maven brakes, you won't be able to as the direct mount won't take anything smaller.
Depending on your territory, certain Stumpjumper 15 models are available to buy right now (S-Works, Pro, Ohlins Coil and Expert in the US, Ohlins Coil in the UK – though not in all sizes). Full pricing for all the Stumpjumper 15 models is as follows...
- S-Works Stumpjumper 15: $12,000 / £10,000 / €13,000 / AUD 19,500
- Stumpjumper 15 Pro: $9,000 / £7,500 / €9,500 / AUD 14,500
- Stumpjumper 15 Ohlins Coil: $8,500 / £7,000 / €8,500 / AUD 12,500
- Stumpjumper 15 Expert: $6,500 / £6,000 / €7,500 / AUD 11,200
- Stumpjumper 15 Comp: $5,500 / £5,250 / €6,500 / AUD TBC
- S-Works Stumpjumper 15 frame and shock: $3,500 / £4,000 / €4,500 / AUD 7,500
So how does the new Stumpy ride?
Guy Kesteven spent two days testing the Stumpjumper Pro on a trip to Conichawan Bay, Canada. He's ridden many (if not all) the incarnations of the Stumpy over the years and found that while new latest version still felt familiar, the changes did made for a bike that had a character of its own, Guy summed up the new MTB:
"Specialized had a seriously hard job on their hands preserving what made the existing Stumpjumper EVO so brilliant, while also pushing the new Stumpjumper forward enough to make it worth buying. The bottom line is that they’ve done a fantastic job. It packs all the geometry adjust versatility and internal storage practicality of the previous two bikes. It then wraps the whole performance envelopes of what were two very different vibing machines into one shock. A shock that you can reconfigure from genuinely coil-like to XC efficient in a couple of minutes.
"They’ve sharpened up things like the internal storage while keeping weight lower than most of its competitors. The fact it pedals and pushes on through technical terrain far better than the previous Stumpjumper offsets the fact that bike was lighter and with the Epic 8 Evo now getting more capable, that gap has pretty much closed anyway."
For more, see Guy's full Specialized Stumpjumper 15 Pro review.
Tech specs: Specialized Stumpjumper 2025
S-Works Stumpjumper 15
- Price: $12,000 / £10,000 / €13,000 / AUD 19,500
- 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 travel
- Fork: Fox Float 36 Factory, GRIP X2 damper, 15x110mm QR axle, 44mm offset, S1:140mm travel, S2-S6:150mm travel
- 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
- Brakes: SRAM Maven Ultimate, 4-piston caliper, hydraulic disc
- Gears: SRAM XX Eagle SL Transmission
- Crankset: SRAM XX Eagle, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm
- Rims: Roval Traverse SL, hookless carbon, 30mm inner width, tubeless ready, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29
- Hubs: DT Swiss 240
- 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"
- Seatpost: RockShox, Reverb AXS, 30.9, S1: 125mm, S2: 150mm, S3-S6: 170mm
- Saddle: Power Pro Mirror, Hollow Ti rails, S1-S2: 155mm, S3-S6: 143mm
- Bars: Roval Traverse SL Carbon, riser bar, 6-degree upsweep, 8-degree backsweep, 30mm rise, S1-S2: 780mm; S3-S6: 800mm
- Stem: Deity, 35mm clamp, 35mm length
- Grips: Deity Lockjaw
Stumpjumper 15 Expert
- Price: $6,500 / £6000 / €7,500 / AUD 11,200
- 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 travel
- Fork: Fox Float 36 Performance Elite, GRIP X2 damper, 15x110mm QR axle, 44mm offset, S1:140mm travel, S2-S6:150mm travel
- 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, S1:210x52.5mm, S2-S6:210x55mm
- Brakes: SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm rotors
- Gears: SRAM GX Eagle Transmission
- Crankset: SRAM GX Eagle, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm
- Rims: Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29
- Hubs: DT Swiss 370
- 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"
- Seatpost: PNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm
- Saddle: Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm
- Bars: 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
- Stem: Alloy Trail Stem, 35mm bar bore
- Grips: Deity Lockjaw
