(no reviews)Product ID: 270429

Specialized Stumpjumper 15 Expert Mountain Bike 2025 - Trail Full Suspension MTB

The Specialized Stumpjumper 15 Expert combines a lightweight carbon frame with elite suspension components, ensuring a smooth and responsive ride. It's designed for riders who want to dominate trails with confidence and precision.

Key Features:

Frame: Lightweight FACT 11m carbon, Trail Geometry
Front Suspension: FOX FLOAT 36 Performance Elite fork, 150mm travel
Rear Suspension: FOX FLOAT Performance Elite with Specialized GENIE Shock Tech, 145mm travel
Drivetrain: SRAM GX Eagle T-Type AXS, 12-speed
Brakes: SRAM Maven Bronze 4-piston hydraulic disc brakes
Wheels: 29" front, 27.5" rear (S1-S2), 29" both (S3-S6) with robust tyres
Other Features: PNW LOAM dropper post
Finance: Available with 0% APR finance

The Stumpjumper 15 Expert is designed to obliterate every trade-off in the trail game. Its lightweight FACT 11m carbon frame is paired with a FOX FLOAT Performance Elite rear shock featuring Specialized's GENIE Shock Technology, which offers the feel and control of a coil spring with better bottom-out prevention and tunable platform for a playful feel. The FOX FLOAT 36 Performance Elite fork, with 150mm travel (140mm for S1), provides excellent handling on varied terrains.

Shifting is smooth and precise with the SRAM GX Eagle T-Type AXS drivetrain, and the SRAM Maven Bronze 4-piston hydraulic disc brakes offer reliable stopping power. The Roval Traverse wheels, combined with Butcher GRID TRAIL front tyre and Eliminator GRID TRAIL rear tyre, ensure durability and traction on the toughest trails.

Specialized's Ride Dynamics team focused on creating a bike that excels in all trail conditions. The S-Sizing system allows riders to choose a frame size based on their riding style, ensuring a personalised fit. This bike's geometry delivers a stable and responsive ride, whether climbing or descending.

The GENIE Shock Technology significantly reduces traction loss and severe bottom-out events, enhancing your control and comfort on the trail. Choose the Specialized Stumpjumper 15 Expert for a trail bike that pushes the boundaries of performance and personalisation, available now with 0% APR finance.

Occasionally, without notice, manufacturers change product design and/or specifications.

Specialized Stumpjumper 15 Size Chart

Size	Height (cm)	Height (inches)
S1 (XS)	150 – 160	4’11” – 5’3”
S2 (S)	157 – 173	5’2” – 5’8”
S3 (M)	165 – 180	5’5” – 5’11”
S4 (L)	173 – 188	5’8” – 6’2”
S5 (XL)	178 – 193	5’10” – 6’4”
S6 (XXL)	188 - 203	6’2” – 6’3”

Find your S Size

Determining your S-Size is easy. If you rode a Medium before, then S-3 will be your equivalent size. But if you want a more nimble ride, you should drop down to an S2. Want a bike that’s more stable at speed? Bump up to an S4. Following are examples of three riders, all 5’8” (1.73m), who chose three different sizes.

Stumpjumper S size examples

Specialized Stumpjumper 15 Geometry

	S1 (XS)	S2 (S)	S3 (M)	S4 (L)	S5 (XL)	S6 (XXL)
Crank Length	165mm	165mm	165mm	170mm	170mm	170mm
Handlebar Width	780mm	780mm	800mm	800mm	800mm	800mm
Stem Length	35mm	35mm	35mm	35mm	35mm	35mm
Saddle Width	155mm	155mm	143mm	143mm	143mm	143mm
Seatpost Length	125mm	150mm	170mm	170mm	170mm	170mm
Stack	608mm	618mm	627mm	640mm	654mm	667mm
Reach	400mm	425mm	450mm	475mm	500mm	530mm
Headtube Length	95mm	100mm	110mm	125mm	140mm	155mm
Headtube Angle	64.5°	64.5°	64.5°	64.5°	64.5°	64.5°
BB Height	334mm	337mm	337mm	337mm	337mm	337mm
BB Drop	41mm	38mm	38mm	38mm	38mm	38mm
Trail	129mm	130mm	130mm	130mm	130mm	130mm
Fork Length (full)	551mm	561mm	561mm	561mm	561mm	561mm
Fork Rake/Offset	44mm	44mm	44mm	44mm	44mm	44mm
Front Centre	720mm	751mm	780mm	812mm	843mm	879mm
Chainstay Length	430mm	432mm	435mm	435mm	445mm	445mm
Wheelbase	1149mm	1181mm	1213mm	1244mm	1285mm	1322mm
Top-tube Length (horizontal)	541mm	573mm	595mm	624mm	647mm	677mm
Bike Standover Height	738mm	751mm	745mm	745mm	745mm	751mm
Seat Tube Length	385mm	385mm	405mm	425mm	445mm	465mm
Seat Tube Angle	78°	77°	77°	76.5°	76.5°	76.5°
Saddle Height for Effective ST Angle	645mm	690mm	735mm	780mm	825mm	870mm
Max Seatpost Insertion	245mm	245mm	255mm	255mm	285mm	285mm
Min Seatpost Insertion	80mm	80mm	80mm	80mm	80mm	80mm

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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
Fork	FOX FLOAT 36 Performance Elite, 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 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
Stem	Alloy Trail Stem, 35mm bar bore
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
Front Brake	SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm
Rear Brake	SRAM Maven Bronze, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 200mm
Brake Lever	SRAM Maven Bronze
Rear Mech	SRAM GX Eagle Transmission Derailleur
Shifters	SRAM AXS POD Controller
Speed	12
Rims	Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29
Front Hub	DT Swiss 370, 15x110mm, 28h
Rear Hub	DT Swiss 370, 12x148mm, 28h
Spokes	Sapim Force
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"
Seat Post	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
Chainset	SRAM GX Eagle Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm
Bottom Bracket	SRAM DUB, BSA 73mm Wide, Threaded
Chain	SRAM GX Eagle Transmission Flattop Chain
Cassette	SRAM GX Eagle Transmission Cassette, 12spd, 10-52
Pedals	Resin Platform