The Specialised Stumpjumper is indubitably essentially the most well-known identify in mountain cycling, celebrating 43 years of evolution with this new version: quantity 15. No longer best has the Stumpy modified with this new technology, the road has additionally observed integration, with out the EVO identify. used within the long-running model of the Stumpjumper. We are again to a unmarried Stump, with 145mm of rear shuttle around the workforce, and 150-160mm forks for all the construct. The geometry and settings are the similar because the outgoing EVO, however minor adjustments were made. The largest alternate comes within the type of a redesigned kinematic, at the side of some wonderful new generation so as to add worth.
Stumpjumper 15 Main points• 29″ or hybrid wheels (S1&S2 hybrid best)
• Carbon duvet
• 145mm body shuttle, 150-160mm fork
• 63-65.5 ° head attitude
• 400-530mm attain
• 430-445mm chains
• 77 ° seat recline
• Wheel sizes and geometry turn chips
Precise weight: 31.2 lb / 14.2 kg (S5)
• Worth: $6,500-12,000 USD
• S-Works Frameset: $3,500 USD
• specialised.com
Body Options Issues right here glance similar to the EVO of the ultimate technology, with press cups that permit ± 1 ° adjustment of the pinnacle, a prime / low chip to switch the peak of the ground bracket and the perspective of the pinnacle / seat, and the rear rocker. hyperlink that lets you power a unique rear wheel. The latter best applies to the S3 and bigger motorcycles, because the S1 and S2 choices are wheel assemblies best. The Stumpjumper comprises SWAT 4.0, Specialised’s maximum subtle in-frame garage resolution but. First observed at the Epic 8, the most recent iteration of the SWAT removes any needless {hardware} fixed at the body, and as a substitute includes a hatch door that connects without delay to the body’s vents, making sure sturdiness, longevity, and climate sealing. just right. .
A brand new innovation at the Stumpy that promises to lift the hackles and do away with the cable machine – this motorbike strikes with out cables. The argument from their construction workforce is they imagine that the most important enhancements to be had come from methods like SRAM Transmission, and that the most efficient is what other people be expecting from this motorbike. The motorbike makes use of a 200mm rotor local submit brake mount, which is just a little sudden bearing in mind that the majority Stumpjumper builds include SRAM Maven brakes – which may give numerous energy on a small 180mm rotor. That mentioned, chasing them with 200s entrance and rear by no means felt an excessive amount of in this motorbike. 
Geometry Just like the outgoing Stumpy EVO, the Stumpjumper 15 makes use of a unique geometry configuration that heats up the body. The headrest will also be deviated 1 ° in any path from the placement of 64.5 °, via simply adjustable cups that include the body. A chip at the chainstay lets in the rider to lift or decrease the peak of the ground bracket through 7mm, in addition to regulate the pinnacle and seat through 0.5°. All of these items in combination make numerous adjustments, so I am sticking to the inventory numbers for now, which duvet the center head house and the highest house of the chip. As discussed above, the perspective of the pinnacle of the brand new Stumpjumper is 64.5 ° – delicate sufficient for the whole lot and handle regulate in easy corners. The perfect seating place for all dimensions falls round 77 °, even if the real attitude that the seat tube makes is way not up to that quantity, touchdown someplace round 70 °. Succeed in figures vary from 400mm to 530mm throughout measurement 6, with a 25mm soar between all however the biggest measurement, which reaches 30mm. The handlebars are too lengthy for the Specialised, the tube period is way better at the larger motorcycles. Bracket drop is 38mm on all however the S1 motorbike, which reaches 41mm. Chainstay lengths vary around the board, with the lengths of all six sizes being as follows: 430mm, 432mm, 435mm, 435mm, 445mm, 445mm. Once more, a few of these values will also be modified through the tip consumer, with other effects conceivable if somebody tries to mix them.
Manufacturing Suspension In some ways it is a acquainted tale, however the characters concerned have modified rather to permit for a unique result. Our major personality – strangely – is the article that has been modified essentially the most right here, with new applied sciences that permit for a parallel line.
We discovered a ton from creating the Levo SL on the subject of energy ranges. Via shifting to a rather decrease beginning place and rather extra ahead than our earlier motorcycles we have now observed a extra constant and progressed journey felt at other speeds, without reference to the surprise. It additionally helped cut back the tension of concern and made the comfort more uncomplicated. The SL used to be designed round a standard surprise absorber with out a Genie generation advanced on the time. Once we rolled out the Stumpjumper 15, we would have liked to convey this again, in spite of the fantastic colour, to look the similarities between the Levo SL and the Levo SL. SJ 15 (we’re making just a little growth on SJ 15). This multiplier works neatly with commonplace puzzles and is helping to validate what Genie brings to the desk. We do not need to cross additional than the preliminary a part of the stroke with further quantity, and the second one spring adjustment choice is further insurance coverage for riders in search of extra fortify later within the journey. — Steve Saletnik
The Genie Surprise
Bearing in mind the Stumpjumper 15 line, it’ll appear essential to put in a modern spring in order that the motorbike does no longer roll too laborious and too continuously. Alternatively, the workforce at the back of the motorbike went the opposite direction and as a substitute concocted a surprise that advantages very much from the linear degree of adoption. The primary essential factor this is the volume of this glorious gasoline. Which means that the beer could have an exterior quantity, referred to as “Additional Quantity” (EV) chamber. All over the primary 70% of shuttle, the interior surprise chamber and the EV arm act as a unmarried air spring, shifting slowly as you progress during the motorbike’s shuttle. At that 70% mark, a sliding bush within the surprise closes the EV compartment, leaving a small inner compartment. This reasons the air chamber to be extra complex, which reasons the vibration to upward thrust within the ultimate 30% of the shuttle and stops you from operating on the finish of the shuttle.
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Specialised Journey Dynamics – the workforce at the back of the Genie surprise – referred to as this generation Pneumatic Spring Lend a hand. The chances that this generation opens up transcend simply this wonder, as described in a patent issued ultimate yr.
The Specialised Journey Dynamics workforce examined quite a few building strategies with the unique Genie surprise fashions to make selections on such things as the transition level between giant and small air and whether or not to surprise piggyback. platform. After all, they determined on Glide as the root of the generation, as a result of any further advantage of the extra gasoline within the piggyback surprise used to be insignificant in comparison to the beneficial properties from the larger air. Thankfully the Glide could also be extremely flexible with a variety of portions, so spares for any essential activity are smooth to search out. Whilst this artful generation lets in the Genie surprise to optimize the efficiency of the kinematics at the Stumpjumper 15, it is not just like the motorbike does not paintings with different shocks. I had the danger to check the motorbike back-to-back with the Genie and different choices, and whilst the integrated shocks gave the impression cheap, the inventory choices labored neatly.
Construct KitsAll carbon, all with the similar form, however with many alternative portions to distinguish the other portions of the construct. The S-Works type differs rather through the usage of a carbon fiber rocker hyperlink to save lots of weight, however in a different way the frames are the similar via all the line. Each and every motorbike, excluding for Öhlins builds, comes with a Genie surprise.
Assessment For the previous few months, the Stumpjumper has been my go-to journey for each day-to-day sizzling rides and lengthy distance rides. This speaks to how a lot I have loved the motorbike to this point, and it additionally speaks to the evolution of the platform. The adjustments within the geometry and the suspension can alternate the glance of the motorbike, taking it from an overly sharp motorbike to a steep slope all throughout the parameters of the product. Geometry smart, I to find this place to be the most efficient for me and my driving place. The 64.5° head tube handles intuitively in plenty of instructions, and stays dependable at the steepest slopes. That is supported through the very best stack period, which will give you a forged upright place with just right weight during the bars. My one gripe is the nook of the seat tube, which feels a marginally too gradual for me. That is most definitely because of the peak of my most sensible seat, and the real top of the tube seat. I had a prior alloy Stumpjumper EVO for a few years, and I vividly keep in mind the nice rides I had on that motorbike. That is even higher, particularly within the nursing bump division. The geometry could be very identical between the 2, however the talent of the Stumpjumper 15 to stay composed of essentially the most tough terrain is spectacular. This motorbike additionally makes an important quantity for a 145mm motorbike, hanging up robust festival with the longest shuttle motorcycles in my storage. Even supposing the suspension turns out purposeful, I by no means discovered it to be smooth or awkward to pump – it simply strikes greater than you would to start with be expecting. For individuals who need the texture of a smaller motorbike, it is as smooth as including spacers for added room for surprise quantity and dialing in air power. Remaining weekend, I went on a journey that may best spotlight the relief, capacity, and sturdiness of 1 Stumpy motorbike. At 95 miles and 18,000 ft of mountain climbing, this used to be one of the crucial greatest rides I have had in fresh reminiscence, and I believe like I picked the very best motorbike for the activity. There have been no decrease ranges at the map, each and every with its personal traits and lines. Working the motorbike in inventory geometry, with 1 spacer within the surprise, it felt like a just right sufficient motorbike to hit some giant issues at the highway, and nonetheless be environment friendly sufficient not to upload further paintings all the way through the day. The drop in standard stats does not simply upload to my ego, however explains how neatly the Stumpjumper rolls – the journey felt nice and amusing all day. Value noting, I performed round with the easy-to-reach locking transfer on a few fireplace escapes, however finally I most popular driving with the swing open. I’ve numerous ideas about this motorbike, however I will attempt to save maximum of them for overview. Keep tuned for it, as this motorbike will indisputably see many diversifications and proceed to play with the setup and adjustments.
