Story by Jerry Tsai
Photos by manufacturers

All-Terrain Trail Bike: Specialized S-Works Stumpjumper

Specialized S-Works Stumpjumper

One of the latest elite trail bike offerings is the S-Works Stumpjumper by Specialized. This legendary bicycle manufacturer knows a thing or two about bicycles, and it’s safe to say that it went all out when it designed the all-new S-Works Stumpjumper.

After a long, hard crawl on the trail in your rig, you arrive at your campsite, park your truck in a prime location, set up camp, and start exploring the area. You first reconnoiter the area on foot. But, in order to quickly cover more ground, you elect to jump on the bicycle you brought along.

Once you’re on it, you go farther than you anticipated. That’s to be expected! An all-terrain trail bike is not only great for exploring the backcountry, it’s also a fun way to enjoy the great outdoors.

The Specialized S-Works Stumpjumper

The newest version of the Specialized trail bike is built for downhill agility, powerful climbing, and overall lightness. Thanks to a ground-up suspension redesign by Specialized’s engineers and the lightest-in-class frame weight, the S-Works Stumpjumper feels as if it’s part of your body when you’re hard at work cranking on it.

One of the secrets to Specialized S-Works Stumpjumper’s performance prowess is the progressive geometry designed and built into it. The bike is long and low. It features a short, offset fork and a steep seat-tube angle. Along with 130mm of suspension travel, these features combine to make the ride more stable, more agile and more comfortable when climbing.

Whether you’re leisurely riding around the campsite or decide to hit it hard and go downhill at speed, you’ll need a go-anywhere bike that’s ready when you are. And, if you’re looking for a trail bike that can handle business both on and off the trail, we recommend taking a good look at the Specialized S-Works Stumpjumper.

However, before you rush out to your local bicycle shop, check out a few of the Stumpjumper’s many innovative technical highlights above.

The Specialized S-Works Stumpjumper includes a beefy red and black framd and beefy mountain bike tires.

Specialized S-Works Stumpjumper: Frameset


Cutting-edge components that make up the frame include a FACT 11m carbon chassis and rear end, carbon shock extension, asymmetrical design, 29 Trail Geometry, SWAT Door integration and flip chip Head Tube/Bottom Bracket adjustment.

Frame refinements

The bike includes a threaded bottom bracket, a fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger and 130mm of travel.



Front dampening is handled by a Fox Float 34 Factory with GRIP2 dampers featuing Kashima Coating with the following specs: 15x110mm, 44mm offset, 140mm of travel.


The rear is supported by a Fox Float DPS Factory rear shock with Rx Trail Tune and EVOL Air sleeve and a Kashima Coat that features a three-position adjustment with open mode adjustment selection.


SRAM COMPONENTS                   

The 30t steel chainring-based drivetrain is made up of high-performance components from the trusted name SRAM.

The parts include an SRAM XG-1299 Eagle 10-52t cassette, SRAM XX1 Eagle DUB crankset, which ranges between 156mm and 175mm, depending on frame size, and a SRAM XX1 Eagle rear derailleur.

The chain and shift levers are also from SRAM’s XX1 series.

The bike’s threaded bottom bracket utilizes an SRAM DUB, BSA 73mm unit.

Specialized S-Works Stumpjumper: Brakes/Wheels and Tires

Front and rear brakes

Braking is handled by a 200mm SRAM G2 Ultimate 4-piston caliper, a hydraulic disc in front, and a 180mm brake of the same model in the rear.

Wheels and tires

The Specialized S-Works Stumpjumper includes two hand-built Roval Control 240 hookless carbon wheels. They have a 29mm inner width. The front wheel has a Specialized Butcher tire. The rear includes a Specialized Purgatory tire. Both tires feature Specialized Grid casing and Gripton compound, and both come in 29×2.3-inch sizing.

How much will it run ya?


*Starting price. Taxes and fees are not included.

Frame size

There are 6 available frame sizes.

Wheel base

(in mm)
1152 through 1302

Chassis material


Suspension travel


Frame weight

79.3 ounces (S-3 size with rear shock)


(Editor’s Note: A version of this story appeared in Tread May/June 2021.)

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