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Specialized Stumpjumper ST Alloy 29

Specialized Stumpjumper ST Alloy 29
  • Color: Satin Dusty Lilac/Black
  • Color: Satin Oak Green/Spruce/Hyper Green
  • Color: Gloss Dusty Turquoise/White Mountain
  • Color: Black/Black
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Please call to check restock status. 800-881-2472


Our Stumpjumper ST models are snappy and nimble, yet Incredibly versatile—the perfect rigs for riders seeking both efficiency and capability. The Stumpjumper ST Alloy 29 makes that winning combo affordable, with components that are big on performance and small on dollar signs.

The ultimate trail bike
The innovative sidearm frame design makes a lighter, better-handling bike. By directly connecting all three mounting points of the rear-end and shock to the frame, we’ve increased both stiffness and performance over bumps. End result? Total control.

Perfectly balanced suspension
Our in-house suspension-tuning team develops custom shock tunes, perfectly paired to each bike’s kinematics. We call this Rx Tune and while it’s not the easy way to build a suspension bike, it’s worth it. You feel Rx Tune as perfectly-balanced suspension.

Smart Parts Pick
- The M5 alloy frame, asymmetrical “sidearm” design, and our 29er Geometry, make this Stumpjumper both capable and efficient.
- 130-millimeters of plush and controlled suspension (including a lock-out) come courtesy of a RockShox Recon RL fork.
- SX Eagle 12-speed drivetrain gives you single-ring simplicity and all the gearing you need to summit the biggest climbs.
- 29er wheels roll over obstacles and maintain your momentum with ease.
- The TranzX seatpost lets you drop your saddle on descents, increasing your maneuverability and control when the trail gets dicey.

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.


Frame M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel
Fork RockShox Recon RL, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost Maxle Lite thru-axle, 130mm of travel
Rear Shock X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm
Axles Front: 15x110mm
Rear: 12x148mm
Rims/Wheels Double-wall alloy, 27mm internal width
Hubs Front: Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h
Rear: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
Spokes Stainless, 14g
Tires Front: Eliminator, GRID TRAIL casing, GRIPTON compound, 2Bliss Ready, 29x2.3"
Rear: Purgatory, GRID Casing, 2Bliss Ready, 29x2.3"
Crankset SRAM SX Eagle, Powerspline, 170mm
Chainrings Steel, 30T
Bottom Bracket SRAM Powerspline
Chain SRAM SX Eagle, 12-speed
Rear Derailleur SRAM SX Eagle
Cassette/Rear Cogs SRAM PG-1210 Eagle, 11-50t
Shifters SRAM SX Eagle, trigger, 12-speed
Handlebars Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
Tape/Grips Specialized Sip Grip, half-waffle, slip-on
Stem Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
Brakes Front: Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
Rear: Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
Pedals Specialized Dirt
Saddle Body Geometry Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails
Seat Post TransX dropper, 34.9mm, S: 125mm, M/L/XL: 150mm Travel

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Satin Dusty Lilac/Black / Small 888818552795 93220-7502
Satin Dusty Lilac/Black / Medium 888818551927 93220-7503
Satin Dusty Lilac/Black / Large 888818551422 93220-7504
Satin Dusty Lilac/Black / X-Large 888818551149 93220-7505
Satin Oak Green/Spruce/Hyper Green / Small 888818552207 93220-7702
Satin Oak Green/Spruce/Hyper Green / Medium 888818551712 93220-7703
Satin Oak Green/Spruce/Hyper Green / Large 888818551842 93220-7704
Satin Oak Green/Spruce/Hyper Green / X-Large 888818551958 93220-7705
Gloss Dusty Turquoise/White Mountain / Small 888818551378 93220-7402
Gloss Dusty Turquoise/White Mountain / Medium 888818552962 93220-7403
Gloss Dusty Turquoise/White Mountain / Large 888818552955 93220-7404
Gloss Dusty Turquoise/White Mountain / X-Large 888818552641 93220-7405
Black/Black / Small 888818551583 93220-7602
Black/Black / Medium 888818552979 93220-7603
Black/Black / Large 888818551125 93220-7604 210000033271
Black/Black / X-Large 888818551903 93220-7605


UBC @ Alafia River State Park