Specialized Stumpjumper St Alloy 29er 2020 Review


The Stumpjumper ST models are snappy and nimble yet Incredibly versatile—the perfect rigs for riders seeking both efficiency and capability. We’ve been a fan of them for a while here at Cyclestore. The Stumpjumper ST Alloy 29 makes that winning combo affordable with components that are big on performance and small on pound signs.

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 Specialized have increased both stiffness and performance over bumps. End result? Total control.

It’s an ultra comfortable bike that can descend as well as it climbs. Even though it’s heavier than some of the more expensive bikes in the same family, the lowest bike in the range still offers fantastic capability. Specialized’s in-house suspension-tuning team develops custom shock tunes perfectly paired to each bike’s kinematics. They’ve named the process ‘Rx Tune’ and it comes as very well balanced suspension.

The Features:

The 29er wheels let you roll over obstacles and maintain your momentum with ease. This makes the bike much comfier than a lot of it’s 27.5 competitors. It rolls well and will help you feel really at home in the saddle of this bike. Mixed with the conservative geometry on the bike, it’ll be like you’ve never ridden anything else.

Up front you’re offered 130-millimeters of plush and controlled suspension (including a lock-out) suspension courtesy of a RockShox Recon RL fork. The bike has fantastic agility through the twists and turns of the trail. When the landings get heavy, the bike will leave you wanting a touch more suspension as it bottoms out slightly. Though the Stumpjumper ST Alloy swallows the majority of bumps & bruises just fine.

An SX Eagle 12-speed drivetrain gives you single-ring simplicity and all the gearing you need to summit the biggest climbs. Combined with the M5 alloy frame the Stumpjumper ST Alloy climbs smooth and efficiently.

The TranzX seatpost lets you drop your saddle on descents increasing your maneuverability and control when the trail gets dicey.

The Verdict:

The handling on the Stumpjumper ST Alloy is incredibly fun and it certainly outperforms it’s price tag. With a lot of the features rolling down from the top of the range, it’s clear Specialized have taken the time to carefully engineer this bike.


  • 86%
    Performance - 86%
  • 93%
    Value - 93%
  • 88%
    Durability - 88%
  • 94%
    Aesthetic - 94%