Last spring Specialized revealed a more aggressive Stumpjumper with, for Specialized at least, some rather radical geometry. Dubbed the Stumpjumper EVO it had a seriously slack head angle, slammed bottom bracket and lengthy reach figures.
It was only available in a Comp Alloy version, and its progressive geometry and well-known FSR suspension garnered a lot of attention — it left Jack Luke with a very good first impression.
Since then, many of you have probably been wondering when the carbon version will show up. Well, today is the day. Say hello the Stumpjumper Evo Pro Carbon.
Specialized Stumpjumper Evo Pro Carbon overview
The Evo is a more gravity-oriented trail bike than many other trail bikes on the market, and by trail we mean alpine trails, DH tracks, Scottish mountain sides and the like, rather than your local blue trail centre route.
A super-slack head angle of 63.5/64 degrees (low and high models respectively), which is verging on downhill bike territory, combined with an impressively long wheelbase and a coil shock add to the gravity-fuelled mix. If you want to read up more on the differences between the regular and Evo Stumpjumper models, check out our Bikeradar's story from the original launch of the alloy model.
As with the alloy version, the Evo Pro Carbon comes with both wheel sizes and in two sizes: S2 and S3. Jack described these as ‘long and longer’. They both have a geometry flip-chip to subtley change the shape of the bike.
While both wheel-sized bikes come with a 150mm fork, the 29er has 140mm rear wheel travel while the 650b version has 150mm. The 650b bikes get a short 37mm offset fork and the 29er gets 44mm — again, short for a 29er. For more information on the effects fork offset has, check out our guide to fork offset.
The smaller 650b S2 has a reach of 465mm and a head angle of 63.5 degrees in its low setting. Flip the chip to high and you get a 470mm reach and a 64-degree head angle. The bottom bracket (BB) height goes from a slammed 324mm to 330mm too.
The 650b S3 get's a huge 490mm reach in low and 495mm in high, as well as the same head angles and BB heights. The seat tube is a touch slacker at 75.6 (low) or 76.1 degrees (high)
The 29in S2 is a touch shorter at 445mm in low and 450mm in high, while the S3 comes in at 475mm or 480mm. The BB is a touch higher at 328mm or 334mm, chip dependant.
Both wheel size bikes come with either 400 (S2) or 450mm (S3) seat tubes, so combining this relatively short tube, along with the various reach and wheel size options means there should be something to fit most riders, especially if you're looking for a more aggressive, longer bike.
Evo Pro Carbon VS Evo Comp Alloy
Alongside the full FACT 11M carbon frame, the Stumpjumper Evo Pro Carbon comes with several upgrades compared to its alloy counterpart, which account for the more than doubling of the price (£3,250 to £6,800 in the UK).
The Evo Pro Carbon is fitted with a Fox Float 36 Performance Elite fork, featuring the new GRIP2 damper, and has 150mm of travel. This is paired with a Fox Float DHX2 Performance Elite coil rear shock — both upgrades over the Rhythm 36 fork and DPX2 air shock on the alloy version. These provide high- and low-speed compression and rebound adjustability.
The carbon bike gets Roval's carbon rims mounted on high-spec DT Swiss 350 hubs with its new 2.6in Butcher GRID tyres.
Another new feature on the Evo Pro Carbon is Specialized’s own Command Post IRcc dropper post, which has a whopping 160mm of travel and is micro-adjustable to 16 points. The SRAM NX Eagle of the Alloy Comp is replaced by the flashier GX Eagle groupset.
For a bike that’s clearly verging on downhill territory, it’s no surprise that one of the most significant upgrades is in the brake area. The Evo Pro Carbon comes equipped with SRAM Code RSC 4-piston caliper hydraulic disc brakes, which provide serious stopping power, especially compared to the usual two-piston brakes seen on most trail bikes.
While the Comp Alloy also carries four-piston caliper Code R brakes, the Code RSC's lever features the SwingLink linkage. This makes for a more progressive feel, allowing for smooth and subtle braking, which should suit the feathering-types among us down to the ground. They're paired with 200mm rotors for ultimate stopping power.
FACT 11m full carbon frame
The frame is constructed from Specialized’s top-quality FACT 11m carbon composite. FACT stands for Functional Advanced Composite Technology and is Specialized’s term for the carbon manufacturing and layup process it uses.
11m refers to the specific carbon type, and this is used in most S-Works level builds. A rider-tuned approach to frame design means that Specialized selects specific materials to engineer the chassis to provide strength, vertical compliance for comfort, lateral and torsional rigidity for power transfer, and optimum weight-to-strength ratio. Layups are size-specific to ensure no excess material is used.
Specialized claims that, as a result, you get a bike with a stiff bottom bracket, responsive handling and a less fatigue-inducing ride feel.
Specialized Stumpjumper Evo Pro Carbon price and availability
The Specialized Stumpjumper Evo Pro Carbon 27.5 and 29 are available to buy as of today directly from the Specialized website.
- £6,800 / International pricing TBC
Ultimate adjustability to suit your riding style and terrain
Controlling the 150mm or 140mm of frame travel (wheel size dependant) is a metric length Fox Float DHX2 Performance Elite coil shock, which Specialized has had tuned with its custom RX Trail Tune.
This steel-sprung suspension system offers plenty of high- and low-speed compression, including a firmer pedal mode, and rebound adjustment, plus the RVS or ‘rod valve system’ damping that claims to provide a faster system cycle, resulting in a more responsive ride feel.
The RX Trail Tune is Specialized’s light suspension tune is designed to provide supple movement off the top to soak up rough terrain and boost traction. It has a more progressive feel through the mid-stroke providing a supportive and traction-rich ride through more techy trail surfaces and ramps up to handle bigger hits, drops and descents towards the last portion of travel.
Flip chips are a popular feature of many a trail bike these days, and as with its non-Evo sibling, this version of the Stumpjumper boasts one too.
It allows the geometry of the bike to be altered by adjusting the position of the shock's mounting in the rocker linkage, which in turn affects bottom bracket height, head angle, reach and trail.
The high setting raises the bottom bracket and steepens the head angle making the bike more suited to climbing or undulating terrain. If you want full-on slack and low, flip it round to the low position.