2025 Specialized Stumpjumper 15 Expert - SRAM GX AXS, FOX Performance Elite
Specialized

2025 Specialized Stumpjumper 15 Expert - SRAM GX AXS, FOX Performance Elite

$6,000.00
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Stumpjumper 15 Expert
Stumpjumper 15 Expert
Trail · 145mm · FACT 11m Carbon · Electronic Only

The Stumpjumper 15 Expert brings GENIE shock technology and the full FACT 11m carbon trail platform to a wider audience. Performance Elite suspension, GX AXS shifting, and the same adjustable geometry as the top builds — at the most accessible Stumpy 15 price point with an electronic drivetrain.

  • GENIE Shock Tech: 16.3% better bump force management, 57% better traction, 39% fewer bottom-outs vs standard air.
  • FOX FLOAT 36 Performance Elite GRIP X2: 150mm (S2–S6), same GRIP X2 damper architecture as higher tiers.
  • FOX FLOAT Performance Elite + GENIE: 2-position lever, 3-setting Open mode tuning, LSR adjustment.
  • SRAM GX Eagle AXS T-Type: Wireless transmission, 10-52t cassette — most accessible AXS drivetrain.
  • Mixed Wheels: 29" front / 27.5" rear (S1–S2) for playfulness; 29" rear (S3–S6) for speed.
  • Roval Traverse Alloy + DT 370: Hookless alloy rims, 30mm inner width, durable hubs.
  • SRAM Maven Bronze: 4-piston, 200mm HS2 rotors — solid power at the Bronze tier.
  • 14.47kg (31 lb): Same frame as Pro, step down in suspension and drivetrain tiers.

The Expert hits the sweet spot — GENIE magic, same carbon frame, at a price that doesn't require a race budget.

GENIE — Coil-Like Feel, Air Spring Control
Patent-pending air spring technology: linear spring rate through the bump zone like a coil, progressive rate at end-stroke to prevent bottom-outs. 16.3% better bump force management, 57% better traction, 39% fewer bottom-outs.
FOX FLOAT 36 Performance Elite GRIP X2
150mm travel (S1: 140mm, S2-S6: 150mm), HS and LS rebound and compression adjustment, 15x110mm QR axle. Same GRIP X2 damper architecture as Factory.
FOX FLOAT Performance Elite + GENIE
Ride Dynamics Trail Tune, 2-position lever w/ 3-setting Open mode tuning range, LSR adjustment. S1: 210x52.5mm, S2-S6: 210x55mm.
SRAM GX Eagle AXS T-Type
GX Eagle Transmission, wireless AXS shifting, 10-52t cassette. Most accessible AXS drivetrain in the Stumpy 15 range.
Mixed Wheel Setup
29" front / 27.5" rear on S1-S2 for nimble, playful feel. S3-S6 goes 29/29 for faster rolling. Geometry unaffected.
Personalization + SWAT 4.0
Six-way geometry adjustment — head angle, BB height, chainstay length. SWAT 4.0 downtube storage. Lifetime pivot bearing replacement.
S1 S2 S3 S4 S5 S6
Crank Length 165 165 165 170 170 170
Handlebar Width 780 780 800 800 800 800
Stem Length 40 40 40 40 40 40
Saddle Width 155 155 143 143 143 143
Seatpost Length 125 150 170 200 200 200
Stack 608 618 627 640 654 667
Reach 400 425 450 475 500 530
Headtube Length 95 100 110 125 140 155
Headtube Angle 64.5° 64.5° 64.5° 64.5° 64.5° 64.5°
BB Height 334 337 337 337 337 337
BB Drop 41 38 38 38 38 38
Trail 129 130 130 130 130 130
Fork Length (full) 551 561 561 561 561 561
Fork Rake/Offset 44 44 44 44 44 44
Front Center 720 751 780 812 843 879
Chainstay Length 430 432 435 435 445 445
Wheelbase 1149 1181 1213 1244 1285 1322
Top-tube Length 541 573 595 624 647 677
Bike Standover Height 738 751 745 745 745 751
Seat Tube Length 385 385 405 425 445 465
Seat Tube Angle 78° 77° 77° 76.5° 76.5° 76.5°
Max Seatpost Insertion 245 245 255 255 285 285
Min Seatpost Insertion 80 80 80 80 80 80
Frameset
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 travel
Seat Binder
Alloy, 38.6mm
SWAT
SWAT 4.0 internal downtube storage
Suspension
Fork
FOX FLOAT 36 Performance Elite, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset. S1: 140mm, S2-S6: 150mm
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
Brakes
Front Brake
SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm HS2 Rotor
Rear Brake
SRAM Maven Bronze, 4-piston caliper, hydraulic disc. S1-S2: 180mm, S3-S6: 200mm HS2 Rotor
Drivetrain
Shift Levers
SRAM AXS POD Controller
Rear Derailleur
SRAM GX Eagle Transmission Derailleur
Cassette
SRAM GX Eagle Transmission Cassette, 12spd, 10-52t
Chain
SRAM GX Eagle Transmission Flattop Chain
Crankset
SRAM GX Eagle Crankset, 32T ring, Integrated Guard, 55mm chainline. S1-S3: 165mm, S4-S6: 170mm
Bottom Bracket
SRAM DUB, BSA 73mm Wide, Threaded
Wheels & Tires
Front Wheel
Roval Traverse 29", hookless alloy, 30mm inner width, DT Swiss 370, 15x110mm, 28h, Sapim Force spokes
Rear Wheel
Roval Traverse — S1-S2: 27.5", S3-S6: 29". Hookless alloy, 30mm inner width, DT Swiss 370, 12x148mm, 28h, Sapim Force spokes
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"
Inner Tubes
Standard, Presta valve
Cockpit
Handlebars
Specialized 6000 series alloy, 6° upsweep, 8° backsweep. S1-S2: 780mm, 20mm rise; S3-S4: 800mm, 30mm rise; S5-S6: 800mm, 40mm rise
Stem
Alloy Trail Stem, 35mm bar bore, 40mm length
Seatpost
PNW Loam Dropper, tool-less travel adjust, Range lever. S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm
Saddle
Bridge Comp, hollow Cr-mo rails. S1-S2: 155mm, S3-S6: 143mm
Grips
Deity Lockjaw, Lock On
Weight
Weight
14.47kg (31 lb, 14.4 oz)
Weight Size
S4

Shipping Policy

Components:

All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 1–4 business days of purchase.

Bicycles:

Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.

Riding Gear & Apparel:

Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 1–3 business days.

Returns & Exchanges:

If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.

For full details, please see our Refund Policy before initiating a return.

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Prepared with intention.

Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.

Passion drives us

At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.

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