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Specialized 20 Stumpjumper ST Alloy

NZ$3,200.00

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 27.5/ 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

  • 130-millimeters of suspension courtesy of a RockShox Recon RL fork.
  • SX Eagle 12-speed drivetrain gives you single-ring simplicity and gearing to spare.

 

  • The M5 alloy frame, asymmetrical “sidearm” design, and our 29er Geometry, make this Stumpjumper both capable and efficient.
  • The M5 alloy frame, asymmetrical “sidearm” design, and our 27.5 Geometry, make this Stumpjumper both nimble and capable.
  • 27.5 wheels accentuate the Stumpjumper ST’s playful on-trail feel.
  • 29er wheels roll over obstacles and maintain your momentum with ease.
  • 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.
  • The TranzX seatpost lets you drop your saddle on descents, increasing your maneuverability and control when the trail gets dicey.

Bike Model

27.5

29

Frame

M5 alloy chassis and rear end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel

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, 46mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel

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 190x45mm

X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm

Front Hub

Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h

Specialized, sealed cartridge bearings, 15x110mm spacing, 32h

Rear Hub

Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h

Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h

Spokes

Stainless, 14g

Stainless, 14g

Rims

Double-wall alloy, 27mm internal width

Double-wall alloy, 27mm internal width

Inner Tubes

Presta, 40mm valve

Presta, 40mm valve

Front Tyre

Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

Rear Tyre

Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

Purgatory, GRID Casing, 2Bliss Ready, 29x2.3"

Crankset

SRAM SX Eagle, Powerspline, 170mm

SRAM SX Eagle, Powerspline, 170mm

Chainrings

Steel, 32T

Steel, 30T

Bottom Bracket

SRAM Powerspline

SRAM Powerspline

Shift Levers

SRAM SX Eagle, trigger, 12-speed

SRAM SX Eagle, trigger, 12-speed

Rear Derailleur

SRAM SX Eagle

SRAM SX Eagle

Cassette

SRAM PG-1210 Eagle, 11-50t

SRAM PG-1210 Eagle, 11-50t

Chain

SRAM SX Eagle, 12-speed

SRAM SX Eagle, 12-speed

Front Brake

Tektro Gemini Comp, hydraulic disc, resin pad, 200mm

Tektro Gemini Comp, hydraulic disc, resin pad, 200mm

Rear Brake

Tektro Gemini Comp, hydraulic disc, resin pad, 180mm

Tektro Gemini Comp, hydraulic disc, resin pad, 180mm

Handlebars

Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp

Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp

Grips

Specialized Sip Grip, half-waffle, slip-on

Specialized Sip Grip, half-waffle, slip-on

Stem

Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

Saddle

Body Geometry Myth:155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails

Body Geometry Myth:155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails

Seatpost

TransX dropper, 34.9mm, XS: 100mm, S: 125mm, ML/XL: 150mm Travel

TransX dropper, 34.9mm, S: 125mm, M/L/XL: 150mm Travel

Seat Binder

Specialized bolt-type, alloy, 38.6mm

Specialized bolt-type, alloy, 38.6mm

Pedals

Specialized Dirt

Specialized Dirt