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2025 Specialized Stumpjumper 15 Alloy

Original specifications: 16.90 kg (37 lb, 4.1 oz) published weight · geometry for 5 published sizes.

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At a glance

Model year
2025
Category
Mountain
Original MSRP
$5,499.99
Sizes
S2, S3, S4, S5, S6
Colors
Satin Brushed Aluminum / Cast Blue
Weight
16.90 kg (37 lb, 4.1 oz)
Geometry
5 manufacturer sizes
In this record
20 specifications · 7 archived images · original MSRP · geometry
Archive ID
900001005
Campaign
Original buildAluminum

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

S2S3S4S5S6

Published colors

Satin Brushed Aluminum / Cast Blue

Frameset

Frame ConstructionM5 Alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel
Frame MaterialAluminum
ForkFOX FLOAT 38 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, 160mm of travel
Rear ShockFOX DHX Factory, Ride Dynamics Trail Tune, 210x55mm, S2: 400lbs, S3: 450lbs, S4: 500bs, S5: 550lbs, S6: 600lbs

Drivetrain

ShiftersShimano SLX, M7100, 12spd
Rear DerailleurShimano SLX, M7100, SGS, 12-speed
CranksetShimano SLX, M7120, 32T ring, 55mm chainline, S2-S3:165mm, S4-S6: 170mm
Bottom BracketShimano, BB-MT801, Threaded
CassetteShimano SLX, CS-M7100, 12-speed, 10-51t
ChainShimano SLX, M7100, 12-speed

Brakes

Brakes(F) TRP DH-R EVO, 4-piston caliper, hydraulic disc, 220mm / (R) TRP DH-R EVO, 4-piston caliper, hydraulic disc, 203mm

Cockpit & Contact Points

HandlebarDeity, Racepoint, 5-degree upsweep, 9-degree backsweep, 810 width, S2: 25mm rise: S3-S6: 38mm rise
StemDeity, 35mm clamp, 35mm length
SaddleBridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm
SeatpostPNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S2: 150mm, S3: 170mm, S4-S6: 200mm

Wheels & Tires

Hubs(F) DT Swiss 370, 15x110mm, 28h / (R) DT Swiss 370, 12x148mm, 32h
RimsRoval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: 27.5
SpokesSapim Force
Front TireButcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
Rear TireEliminator, GRID GRAVITY casing, GRIPTON® T9/T7 compound, 2Bliss Ready, 27.5x2.3"

Geometry

5 sizes · 19 measurements

Frame measurements by size.

All geometry measurements5 sizes · 19 measurements
MeasurementS2S3S4S5S6
Seat tube385 mm405 mm425 mm445 mm465 mm
Effective top tube574 mm596 mm625 mm649 mm678 mm
Head tube100 mm110 mm125 mm140 mm155 mm
Head-tube angle64°64°64°64°64°
Seat-tube angle76.5°76.5°76°76°76°
Chainstay / rear center432 mm432 mm432 mm442 mm442 mm
Wheelbase1186 mm1216 mm1247 mm1288 mm1325 mm
Bottom-bracket drop35 mm35 mm35 mm35 mm35 mm
Bottom-bracket height340 mm340 mm340 mm340 mm340 mm
Reach420 mm445 mm470 mm495 mm525 mm
Stack621 mm630 mm644 mm657 mm671 mm
Standover height751 mm745 mm745 mm745 mm751 mm
Fork offset / rake44 mm44 mm44 mm44 mm44 mm
Front center755 mm785 mm816 mm848 mm884 mm
Trail134 mm134 mm134 mm134 mm134 mm
Fork length / axle-to-crown573 mm573 mm573 mm573 mm573 mm
Crank length165 mm165 mm170 mm170 mm170 mm
Stem length35 mm35 mm35 mm35 mm35 mm
Handlebar width810 mm810 mm810 mm810 mm810 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes32T · 10–51T · 12-speed
Lowest0.63:1 Highest3.20:1 Total range510%
Estimated speed At 90 RPM Lowest gear4.6 mph Highest gear23.6 mph

Rear tire: 27.5×2.3.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano SLX, M7100, 12-speed Search: Shimano CN-M7100 chain
Retailer offers · Affiliate links
Cassette · Original
Shimano SLX, CS-M7100, 12-speed, 10-51t Search: Shimano CS-M7100 12-speed 10-51 cassette
Front tire · Original
Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3" Replacement search: 29x2.3 hookless compatible bicycle tire Before ordering: Check tire approval and pressure for your rim.
More parts (5)
Bottom bracket · Original
Shimano, BB-MT801, Threaded
Retailer offers · Affiliate links
Crankset · Original
Shimano SLX, M7120, 32T ring, 55mm chainline, S2-S3:165mm, S4-S6: 170mm
Rear derailleur · Original
Shimano SLX, M7100, SGS, 12-speed Search: Shimano SLX, M7100, SGS, 12-speed rear derailleur
Retailer offers · Affiliate links
Shifters · Original
Shimano SLX, M7100, 12spd Search: Shimano SLX, M7100, 12spd shifter
Seatpost · Original
PNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S2: 150mm, S3: 170mm, S4-S6: 200mm
Retailer offers · Affiliate links
Bike Yoke Revive 2.0 Dropper Seatpost Black, 34.9mm, 125mm

Bike Yoke Revive 2.0 Dropper Seatpost Black, 34.9mm, 125mm

34.9mm, 125mm

Replacement option · verify fit

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.

Bike-specific inspection checklist 23 checks based on 6 archived component groups Open checklistClose checklist
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This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2025 Specialized Stumpjumper 15 Alloy · Mountain · Published sizes: S2, S3, S4, S5, S6

Archived: Frame: M5 Alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel · Fork: FOX FLOAT 38 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, 160mm of travel

Archived: Fork: FOX FLOAT 38 Factory, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, 160mm of travel · Rear shock: FOX DHX Factory, Ride Dynamics Trail Tune, 210x55mm, S2: 400lbs, S3: 450lbs, S4: 500bs, S5: 550lbs, S6: 600lbs

Archived: Shifters: Shimano SLX, M7100, 12spd · Rear derailleur: Shimano SLX, M7100, SGS, 12-speed · Crankset: Shimano SLX, M7120, 32T ring, 55mm chainline, S2-S3:165mm, S4-S6: 170mm · Bottom bracket: Shimano, BB-MT801, Threaded · Cassette: Shimano SLX, CS-M7100, 12-speed, 10-51t · Chain: Shimano SLX, M7100, 12-speed

Archived: Brakes: (F) TRP DH-R EVO, 4-piston caliper, hydraulic disc, 220mm / (R) TRP DH-R EVO, 4-piston caliper, hydraulic disc, 203mm

Archived: Rims: Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: 27.5 · Hubs: (F) DT Swiss 370, 15x110mm, 28h / (R) DT Swiss 370, 12x148mm, 32h · 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"

Controls and contact points

Archived: Handlebar: Deity, Racepoint, 5-degree upsweep, 9-degree backsweep, 810 width, S2: 25mm rise: S3-S6: 38mm rise · Stem: Deity, 35mm clamp, 35mm length · Seatpost: PNW Loam OE Dropper, tool-less travel adjust, Range lever, 34.9, S2: 150mm, S3: 170mm, S4-S6: 200mm · Saddle: Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm

Before and during the test ride

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Gallery7 images

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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