The Stumpjumper FSR ST has great small bump compliance with 120mm of travel in the rear and 130mm in the fork.
Models of the bike are available with 27.5” or 29” wheels. This allows riders to choose a bike that fits their riding style best.
The Stumpjumper FSR ST is available with an aluminum or carbon frame.
Specialized has engineered the stiffness in each frame size of carbon models, specifically for that size rider.
The bike is available in sizes small through to extra large. A wide range of riders fit the bike.
The Roval Traverse wheels come tubeless-ready on the Stumpjumper FSR ST.
Test riders were pleased that the bike had a threaded bottom bracket. This is easier to maintain than a press-fit bottom bracket.
Internally routed cables are cleanly routed through tubes in the Stumpjumper FSR ST’s frame. This gives the bike a tidy appearance.
There are tabs for a chain guide on the bike.
The Specialized Phenom Saddle is comfortable on the Stumpjumper FSR ST.
Large 200mm and 180mm brake rotors are paired with SRAM or Shimano brakes. They allow riders to stop quickly.
Wide 2.6” tires from Specialized provide riders with excellent traction on wet and dry trails riding the Stumpjumper FSR ST.
The bike uses X-Fusion’s Manic dropper post, which is reliable and easy to operate.
Testers agree the SWAT compartment in the downtube of the bike is an excellent place to store snacks and tools.
The bike comes with a lifetime warranty on the frame.
A molded protector on the bike's chainstay dampens the noise from chain-slap.

6 reasons not to buy

Some testers found they experienced frequent pedal strikes because of the low bottom bracket on the Stumpjumper FSR ST.
With greater anti-squat than other mountain bikes in its category, the Stumpjumper FSR ST is prone to pedal bob if the climbing lever is not engaged.
Experts note that taller riders may find the reach is shorter than the reach on other bikes in its category.
One expert found the bike unstable at high speeds due to its compact size and steep seat tube angle.
Test riders agree that the bike's geometry and riding position allowed them to feel trail chatter more than on competitors' bikes. This can lead to fatigue.
The Stumpjumper FSR ST is not built to handle big hits or aggressive terrain.

Bottom line

The Stumpjumper FSR ST is a bike with 120mm travel in the rear and 130mm in the fork. It offers riders excellent small bump compliance. It’s not meant for big hits or aggressive trails. It does best on smooth, rolling terrain. Testers found it easy to bottom out. The bike is a capable climber but only when the climbing mode is engaged. They also found that their body fatigued quicker over rough terrain than on other bikes. Pedal strikes are also an issue with its low bottom bracket. The bike has a handy SWAT storage compartment for tools and treats. This bike has a lifetime warranty but if you are looking to tackle technical gnar it's probably not for you.

Expert Reviews

77/100 based on 3 rated expert reviews

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Bike Perfect

Level 5 expert

Specialized Stumpjumper ST Comp Carbon Review

Level 5 expert

If your riding is more fast-flow than techy-gnar, the ST is a brilliantly fun option well worth considering.

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Mountain Bike Rider

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Specialized Stumpjumper FSR ST Comp Carbon 29 Review

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The Specialized Stumpjumper FSR ST Comp Carbon 29 is a short-travel bike with a big name. It has a 130mm fork and 120mm at the rear.

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GearLab

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Specialized Stumpjumper ST Comp Carbon 29 2019 Review

Level 5 expert

The Stumpjumper ST Comp Carbon 29 is the big-wheeled, short-travel, version of this do-it-all trail bike, with 120mm of rear and 130mm of front wheel travel.

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MTB yumyum

Level 5 expert