2021 Specialized Stumpjumper EVO Expert

The Stumpjumper EVO comes with the most adjustable geometry Specialized has ever offered on a trail bike.

2021 Specialized Stumpjumper EVO Expert Bike Review

The storied Specialized Stumpjumper EVO—arguably the most famous mountain bike model in the history of our sport—is back for 2021, and the newest incarnation feels more refined and adjustable than ever before.

With a headtube angle that’s adjustable from 65.5 degrees all the way down to 63 degrees, and a bottom bracket with height adjustability from 32 millimeters of drop to a ground-hugging 39 millimeters of drop, the new Stumpjumper EVO Expert we tested comes with multiple geometry options that can radically change its personality on a wide variety of terrain.

The 2021 Stumpjumper EVO certainly has retained some of the climbing characteristics of its previous iteration. Specifically, it’s a bike that is far better to climb in the seated position than hammering out of the saddle—a trait attributed to the FSR suspension platform, which gives impressive traction through chunky terrain while climbing in the seated position. While climbing in the seated position, my weight felt balanced between the front and rear wheels, allowing me to stay comfortable and in control on even the steepest of climbs. I found the lowest bottom-bracket setting to be the best for climbing, as it extends the chainstay dimensions, adding to its overall stability. When it came to dialing in the compression on the super-active Fox Float DPX2 Performance Elite shock, I preferred switching it into the middle setting on the climb switch to slightly stiffen the pedaling platform.

Geometry & Specs:

Wheel size: 29"
Rear travel: 150mm
Fork: 160mm
Wheelbase: 1261mm
Chainstay: 443mm
Reach: 468mm
Head tube angle: 63°

The EVO frame features a “Sidearm” chassis.
Butcher Front tire, Grid Trail T9 Compound.
FOX FLOAT 36 Performance Elite, GRIP2 damper, 15x110mm, 44mm offset, S2-S6: 160mm of travel.
SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm.
Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 30mm rise, 780mm, 35mm clamp.
Deity Knuckleduster Grips.
Horst linkage suspension platform on the Stumpjumper EVO.
The new Stumpjumper has increased volume and added a SWAT™ Bladder, giving you an extra 22oz of water storage – the same size as a small water bottle – hidden in your downtube.
Enough space for 22 0z of water and all you need for a ride in the SWAT storage.
SRAM Descendant 7K, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm.
Linkage detail.
Chain Stay protection is ample on the new Stumpjumper
Adjustable flip chips are featured on the rear linkage for maximum adjustablility of the new Stumpjumper. Sram X01 Eagle, 12-speed takes care of the shifting.
Eliminator Grid trail rear tire in T7 Compound.
X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1:100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm)
Bridge Comp, Hollow Cr-mo rails, 155/143mm
"Side Arm" frame design.
FOX FLOAT DPX2 Performance Elite, Rx Trail Tune, EVOL Air sleeve, 3-position adjustment w/ Open Mode adjustment, S1:210x50mm, S2-S6:210x55mm.
Carbon Frame with Two tone paint job on the Expert model of the Stumpjumper.

The new bike’s downhill performance, however, is even more impressive than its tractor-like climbing ability. With the head angle raked out to 63 degrees, the long wheelbase paired with the low bottom bracket made the Stumpjumper EVO feel like a turbo-charged rally machine on the descents. I was impressed by how much the 63-degree head angle added stability at high speeds, while also giving massive confidence when charging down some hideously steep rock rolls. In this slacked-out setting, the bike really does pave the trail in front of you, and I found I was quickly shoving the fork into rocks and holes without a care in the world. What’s more, the new kinematics of the shock allowed me to land deep off big drops without fearing the dreaded bottom-out clank of days past.

For me, the best thing about the new Stumpjumper EVO is that with 160 millimeters of suspension in the front and 150 millimeters in the back, I always felt connected to the terrain underneath me. And with the reasonable reach of 468 millimeters, the EVO still feels incredibly agile, especially given the bike’s high level of stability. Even with the 443-millimeter chainstay on my size S4, the EVO was easy to pull up for manuals. And perhaps even more importantly, in the low bottom-bracket setting the EVO cornered tightly despite its lengthy chainstay.

The thought that Specialized put into the new Stumpjumper EVO is obvious, and it addresses some of the issues with previous iterations while retaining its signature characteristics of less suspension with slacker geometry.

Specialized Stumpjumper EVO Expert - $4,900