Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Specialized
2020 Specialized Stumpjumper ST Alloy 29
Previous used estimate
$773 - $795
Actual value depends on condition, size, and local demand.
Value Guide market data · 2020 Specialized Stumpjumper ST Alloy 29
12-month projected trend
9%
Direction and magnitude, not judgment
vs. category average
1%
Drops faster than category avg
Price over time - 2020 Specialized Stumpjumper ST Alloy 29
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Stumpjumper model years
Overview
About this bike
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.
Specifications
- Subtype
- Trail / Enduro
- Category
- Mountain
- Component 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
- Component Hubs
- Front: Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h Rear: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
- Component Size
- Small, Medium, Large, X-Large
- Component Stem
- Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
- Product Family
- Stumpjumper
- Component Axles
- Front: 15x110mm Rear: 12x148mm
- Component Chain
- SRAM SX Eagle, 12-speed
- Component Color
- Satin Dusty Lilac/Black, Satin Oak Green/Spruce/Hyper Green, Gloss Dusty Turquoise/White Mountain, Black/Black
- Component 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
- Component Brakes
- Front: Tektro Gemini Comp, hydraulic disc, resin pad, 200mm Rear: Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
- Component Pedals
- Specialized Dirt
- Component Saddle
- Body Geometry Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails
- Component Cassette
- SRAM PG-1210 Eagle, 11-50t
- Component Crankset
- SRAM SX Eagle, Powerspline, 170mm
- Component Shifters
- SRAM SX Eagle, trigger, 12-speed
- Component Handlebar
- Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
- Component Seat Post
- TransX dropper, 34.9mm, S: 125mm, M/L/XL: 150mm Travel
- Component Chainrings
- Steel, 30T
- Component Front Tire
- Front: Eliminator, GRID TRAIL casing, GRIPTON compound, 2Bliss Ready, 29x2.3" Rear: Purgatory, GRID Casing, 2Bliss Ready, 29x2.3"
- Component Rear Shock
- X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm
- Component Tape Grips
- Specialized Sip Grip, half-waffle, slip-on
- Component Bottom Bracket
- SRAM Powerspline
- Component Rear Derailleur
- SRAM SX Eagle
- Rear Shock
- X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm
- Hubs
- Front: Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h Rear: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
- Crankset
- SRAM SX Eagle, Powerspline, 170mm
- Pedals
- Specialized Dirt
- Bottom Bracket
- SRAM Powerspline
- Chain
- SRAM SX Eagle, 12-speed
- Saddle
- Body Geometry Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails
- Handlebar
- Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
- Rear Derailleur
- SRAM SX Eagle
- Stem
- Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
- Axles
- Front: 15x110mm Rear: 12x148mm
- Brakes
- Front: Tektro Gemini Comp, hydraulic disc, resin pad, 200mm Rear: Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
- Cassette
- SRAM PG-1210 Eagle, 11-50t
- Chainrings
- Steel, 30T
- 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
- 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
- Seat Post
- TransX dropper, 34.9mm, S: 125mm, M/L/XL: 150mm Travel
- Shifters
- SRAM SX Eagle, trigger, 12-speed
- Tape/Grips
- Specialized Sip Grip, half-waffle, slip-on
- Color
- Black/Black
- Size
- X-Large
- Front Tire
- Front: Eliminator, GRID TRAIL casing, GRIPTON compound, 2Bliss Ready, 29x2.3" Rear: Purgatory, GRID Casing, 2Bliss Ready, 29x2.3"
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.