On paper, the Specialized S-Works Stumpjumper looks quite outdated. The geometry is rather compact, the suspension is linear and yet this bike remains an excellent choice for the majority of riders.
How come? Click here for an overview of the best trail bike in test. An additional side arm connects the top tube with the seat tube to optimise stiffness on the carbon frame. But this attention to detail is also reflected in the price. As you might expect, that also means top-notch componentry throughout. Lightweight Roval Traverse SL wheels cut the weight to a slender There is nothing to complain about on the cockpit either, though we would recommend removing the spacers under the stem to compensate for the long head tube and the rise of the bars.
Long reach and slack head angle — these are the two indicators of modern geometry. While some brands battle it out with increasingly radical values, Specialized have kept the Stumpjumper conservative. The mm reach on the size L is short and the The seat tube angle is also rather slack at Before doing anything else with the Stumpjumper we recommend sliding the saddle all the way forward as otherwise, the slack seat tube angle puts your weight too far towards the back.
The rear suspension underlines this, being tuned more for comfort than maximum efficiency. This means that the bike does suffer from pedal bob, but it also provides a lot of traction and sensitively absorbs all bumps. Thanks to the light wheels, the bike climbs easily. Super comfortable! Both the rear suspension and the geometry of the Stumpjumper are designed with comfort in mind.
Due to the compact geometry and the low bottom bracket, it is very easy to generate an even amount of grip with both wheels, making easy work of quick direction changes. The suspension performs as sensitively on the descents as it does on the climbs. It provides a lot of traction, but active riders will want more support at the rear. When pumping the bike and on hard landings, it uses up its mm travel too readily. To compensate for this, it helps to increase the low-speed compression of the rear suspension slightly.
Tuning tips: push the saddle forwards remove the spacers under the stem. The Genius is livelier and more direct as you accelerate, while the Stumpy conserves your energy on long rides and instils you with confidence in demanding terrain.
Unfortunately, neither can keep up with the Ibis Ripmo. The latter offers a better pedalling position on the climbs and covers ground efficiently, as well as offering a lot more reserves on the descents while remaining highly agile. The Specialized S-Works Stumpjumper is still one of the most fun and versatile bikes on the market. It impressed us with its intuitive, stable and easy handling and is very comfortable to ride. However, active riders will want more mid-stroke support and composure.
The SWAT system is still brilliant, but the hefty price of the whole package is a flop! This scale indicates how efficiently the bike climbs. It refers to both simple and technical climbs. Along with the suspension, the riding position and the weight of the bike all play a crucial role. How does the bike ride and descend?
How spritely is the bike, how agile is it through corners, how much fun is it in tight sections and how quickly can it change direction?In the case of our top-of-the-line test bike, in spite of an elegant carbon-fiber chassis, state-of-the-art componentry, highly evolved SWAT storage and tool options and the populist ability to run either inch or The industry has swung heavily toward longer wheelbases, slacker head angles, steeper seat angles, rangy toptubes and stubby stems.
Against that current trend, the Stumpjumper posts up almost-modest geometry figures: A degree head angle, degree seat angle, wheelbase at a sensible 1, millimeters, reach on our size-large test bike at millimeters, with a correspondingly long millimeter stem. The FSR suspension holds its own in terms of tractability and climbing behavior, maybe not quite as snappy as some of the competition, but the Stumpjumper scoots uphill with ease. The SWAT storage compartment is unique and functional, the SWAT tools are cleverly stored and unobtrusive and the whole bike feels cohesively put together, with the exception of the Command Post dropper, which felt unsophisticated compared to the competition.
The Stumpy presents a solid case for geometry conservatism. This bike flat-out rails turns, whether they be tight switchbacks or fast berms, and is a joy to ride through no-flow technical terrain. The compact front center and longer stem offer precise handling and a balanced feel, and this latest Stumpjumper rewards riders with an agile and fun ride.
Edging up into warp-speed descending territory, the bike begins to lose ground to the new-school barges. Part of this can be chalked up to being shorter and steeper, and this is a natural compromise between technical fun and high-speed stability, but some testers also felt the rear Ohlins shock was a little overdamped and handicapped high-speed behavior.
Overall, the evolution of the Stumpjumper has been fruitful. For riders who prefer technique and finesse over gravity-induced top speed, this latest S-Works offering is a polished and classy choice well worth consideration. It seems the industry is currently in a race to see who can be the slackest and the longest, and the Stumpjumper now seems almost conservative alongside the current crop of long and slack trail bikes.
Is there a good argument for geometry conservatism in the current climate? Things are changing quickly across the board in trail bikes these days, and certainly since the Stumpjumper chassis was developed. While the long and slack bikes have benefits, there is a point of diminishing returns for a go-everywhere, do-everything bike like the Stumpjumper.
As has been the case with many mountain bike industry trends, we can tend to go a bit overboard and then pull back for the long-term direction. We are barely two years into the time of Plus size wheels, and our test bike is capable of running either Due to timing and terrain, we tested it entirely in the inch guise—can you share with readers what you are seeing in terms of consumer preference when given the choice of running Plus or inch hoops?
We see a pretty even split across the Plus made a big splash initially, but like most new trends we see the pendulum swing back a bit in terms of preference.
Plus is still selling well, it just seems to be settling as one of the three common sizes rather than displacing other sizes. We like to give riders the option to choose the setup they prefer for their type of trails and riding style, which is why we offer Stumpjumper in all three build options. There were some testers who felt that the rear suspension was more heavily damped than they considered ideal, primarily in terms of getting the front-to-rear balance spot on. Care to either dispute or explain how the suspension spec and tune on this bike was determined?
Rx Tune is designed to be the best all-round tune for most riders, although there will always be some riders who desire a different tune, which can easily be accommodated via custom tuning from the shock manufacturer.Forgot Username or Password. With a boutique spec list stacked with top-tier components and an all-new frame design, it is a zero-compromise option for the most elite of cyclists. Although visually similar, this latest generation of Stumpjumper is a new beast altogether.
Retaining the side-arm design, Specialized have built an incredibly versatile bike perfect for a wide range of riders. Designed for outright speed, this latest frame features a roomy top tube and confidence-inspiring angles for a planted feel, no matter how rowdy the line.
Revised suspension kinematics create a ride like no other, offering lively characteristics perfect for popping lips and pumping free-speed out of the trail. A progressive leverage curve gives the Stumpjumper a bottomless feel, using every bit of the mm on offer to propel you down the descents. Excellent small bump management and a specific RX Trail Tune ensure glue-like grip on loose terrain, balanced with big-hit performance for when things go awry.
With low seat-tube heights, riders of all statures can reap the benefits of a more stable or playful ride depending on their preference. Size up for a more planted ride, size down for manoeuvrability - the choice is yours. A yoke mounted flip-chip allows for further fine-tuning, allowing you to drop the BB and slacken out the head angle by half a degree for a more aggressive ride.
Yes, I'm Accept.The fact that Specialized would revise the Stumpjumper for was foreseeable. However, what the American brand came up with has exceeded expectations. The new Stumpjumper is lighter, more efficient and even more versatile.Francoise Dolto, for the Love of Children
Specialized have revised and streamlined their range for the new season. Gone are the days of the Stumpjumper ST. It has become lighter and, with a mm fork and mm at the rear, has slightly less travel. The bike is available with either a carbon or aluminium frame in a total of six sizes. One of the main goals in the development of the new Stumpjumper was to make it lighter and more efficient than its predecessor.
Not only have the kinematics been revised and the travel reduced, but the carbon frame has also been weight-optimised. Specialized have foregone the Horst Link pivot on the rear stays of the Stumpjumper, relying on so-called flex stays instead. This means the carbon seat stays flex during compression. By getting rid of the bearing required for the pivot, Specialized were able to save 55 g.
With the help of this and other weight-saving measures, the frame is g lighter than its predecessor. According to Specialized, the frame weighs 2, g, including the shock, axle, seat clamp and other hardware. Due to the generally lighter spec with thin-walled tires, a shock without a reservoir and the FOX 34 fork, the new S-Works Stumpjumper weighs only The new Stumpjumper is a bike for all occasions!
Specialized offer the new Stumpjumper in a total of six sizes from S1 to S6. To make this possible, the American brand have kept the seat tubes extra short, ranging in length from — mm, which also allows them to spec longer dropper posts for more freedom of movement. The jumps in reach between the frame sizes vary between 20—25 mm.
The geometry of the Specialized Stumpjumper used to be very conservative. That all changes with the new model! The bottom bracket is quite low with a drop of 42 mm in the low setting. Speaking of which, a flip-chip allows you to adjust the geometry of the new Stumpjumper in two positions.
Following, we present the bike in the low position, which is how it gets delivered and how we would leave it. But not everyone can or wants to afford the outrageously expensive flagship models. With the exception of the rocker link, the frame is identical to that of the S-Works model which costs almost twice as much. Everything looks a little more delicate and less oversized. With the air pressure and rebound set up as recommended on the chart and the compression almost completely open, we hit the trails.
The new Stumpjumper is super comfortable. The handling of the Stumpjumper is super agile and light-footed. The suspension is significantly more progressive than its predecessor.Grinder stand for kitchen
At the same time, it constantly invites the rider to play with the trail. Even flat and supposedly boring trails are a lot of fun aboard the Stumpjumper!
Specialized Stumpjumper Evo S-Works carbon review
We were particularly impressed with the mm dropper post and the short and wide cockpit. The Stumpjumper is light and efficient, while the Stumpjumper EVO is significantly more capable and more trimmed towards the descents. While the Stumpjumper dances over roots and invites you to play with the terrain, the Evo entices you rather to let go of the brakes and hold on.
Still, both bikes are very versatile. So, which bike should you buy? The Stumpjumper is for those who want a light, efficient bike for going on long rides, both uphill as well as downhill. On the other hand, the EVO is for those who like spending their weekends in the bike park and also prefer using a shuttle.Forthe venerable line of cross country bikes just got a complete overhaul.
Specialized says that the Progressive Geometry of the Stumpjumper is long, low, and slack, with a short offset fork and a relatively steeper seat tube angle. The flip-chip design allows you to tune the geometry — adjusting the bottom bracket height by 7mm and head tube angle by half a degree — to suit your mood and riding needs.
Specialized notes that a lower bottom bracket and slack head tube angle with reduced fork offset while increasing stability. The other net effect of this design is up to mm of travel without any pivot hardware or redundant material required for bonding pivot parts. The Morgan Hill, California-designed Stumpjumper was created with a size-specific approach to ride characteristics to ensure superb handling and flawless performance for this 2.
Engineers at the Big Red S also say that this frame is more than grams lighter than the previous Stumpjumper chassis. The S-Works Stumpjumper frame is fabricated from the same carbon used in the super lightweight Aethos road bike.
Of course, fully enclosed internal cable routing makes this bike look clean before you get it dirty. Trail riding? Check out the Specialized Stumpjumper Evo, for which Specialized says this bike was specifically designed.
Bible Review: Specialized Stumpjumper 29/6Fattie
The Stumpy Evo sports mm of travel, which should allow for precision and control when descending. A relatively lower bottom bracket, steeper seat tube and slacker head tube angles, and a roomy cockpit should make this an agile and responsive riding experience. Specialized says that determining size is easy as each of the sizes from S1 to S6 correlates to a previous size.
What this means is if you previously rode a medium, then S-3 will be your equivalent size. Likewise, the bottom bracket height can be adjusted by a much as 7mm with a Horst flip-chip. The travel range is mm rear and mm front, while the design of the tuned progressive leverage was informed through the development of the Specialized Enduro.
So, not only can you rip down hills with ample responsiveness and control, but climbing should prove out to be easier, too. And Specialized even says with a 2,g frame only, size S4 frame. The Specialized Stumpjumper Evo is available in carbon or aluminum frames, with a wide range of build options. Get the latest race news, results, commentary, and tech, delivered to your inbox.
Weekly Newsletter Get the latest race news, results, commentary, and tech, delivered to your inbox. Email Address Subscribe. Newsletter sign-up. Gravel Gear.When Specialized released the current Stumpjumper inthe bike included many changes to the outgoing model.
But at the same time, they revealed an alloy only Stumpjumper EVO with an attention-grabbing progressive geometry, and a shorter travel version; the Stumpy ST. Today, Specialized is releasing their latest incarnation of the Stumpjumper and with it a more focused approach.
The Stumpjumper EVO remains part of the range and the latest model was released a week ago. Throughout the frame, Specialized continues to evolve its manufacturing processes to create a more consistent and comfortable ride, one they claim continues through the size range. The layup process has been updated, the area of the frame where the SWAT door is integrated has been reworked, and the suspension has improved.
Different material layups and composite combinations were evaluated to produce a lighter but tougher frame. Losing the pivot from the chainstay of the Stumpjumper is a relatively big move for Specialized, considering their bikes have been synonymous with the Horst Link design, which they held the patent to until recently.
When asked why they moved in this direction, Specialized engineers noted they cut weight — claiming 55 grams in hardware — from the frame by removing the Horst pivot.
They also claim that improved lateral and torsional chassis stiffness was achieved with the move to the flexstay.
Another claim is that moving away from the Horst Link on sub mm travel bikes provided an improved ride. The shorter travel Epic models also use a flexstay rear end but any shorter travel aluminum-framed options retain the Horst Link. Specialized ditched the Horst pivot traditionally found on the Stumpjumper in favour of a lighter flexstay. Only the two alloy framed Stumpjumpers will continue with the Horst Link design.
Throughout the development of the new frame, engineers apparently focussed on cutting weight while adding strength. Thanks to what they've learned over time and from the development of the Aethos road bike frame — mentioned more than once in the presentation — the team had new methods at their disposal. This translated to an improved carbon layup that cut grams of fat from the frame. The team worked on the shape of the frame, stating that this largely determines the weight, stiffness, and durability.
At the Stumpjumper launch, many of the same claims were made, as were the points of discussion around applying this process throughout the size range. Doing it for one frame size is hard enough but to provide an optimized ride across all sizes, the tube shapes and thickness have to be adapted accordingly.
At this point the process of working out the best layup began and they spent more than days in this phase. It took the team 12 iterations of the front triangle alone, before arriving at their targets.Ingenieur gehalt netto
While working on improving the layup and composite mix of the frame, Specialized also improved the frame around the SWAT door. A sort of exoskeleton was introduced in the layup, better-transferring forces through this part of the frame, improving strength and ride characteristics. Moving to a flexstay rear triangle introduces new characteristics to the feel of the rear suspension. With the Horst Link removed from carbon models, the flex from the rear triangle introduces an additional spring element and provides a subtle rebound to the rear that influences the shock.
Specialized also noted that their flexstay introduces a subtle negative spring, improving feel off the top of the stroke. Working with the characteristics of the new flexstay, Specialized engineers moved to the digressive piston offered by Fox in the DPS shock.
Their goal was to provide a stable, energetic bike when mashing on the pedals, but for it to remain comfortable when things got rough. The spring curve is quite linear with Specialized noting they wanted riders to use full stroke with the progressive leverage curve. Specialized claims that together, the tune and flexstay also provide a supportive mid-stroke.Daily pooja timings at home
Things also got interesting with rebound tune. Specialized RX Rider Experience engineer, Chance Ferro mentioned that a time where the shock tune was near complete, they were sent back to the lab. After a ride with fellow Specialized staff member and ex-World Cup Downhiller, Brad Benedict, they realized it didn't cover the range of riders as well as hoped.
Larger events that cause the spring to quickly store energy returning aggressively without appropriate damping needed to be controlled but Specialized also needed the suspension to remain active for grip when encountering smaller feedback, and still be responsive to rider input, creating a lively ride.A huge number of trail bikes can do it all.
Specialized first introduced it in and it is widely considered to be the first-ever mass-production mountain bike. Our own Spencer Powlison still rides his Stumpjumper Sport. He even raced the Leadville Trail on it! Specialized founder, Mike Sinyard, was just getting into the mountain bike craze himself and envisioned the Stumpjumper as a mass-produced bike that emulated the geometry and performance of custom mountain bikes.Vidas robadas netflix
Neenan drew up plans for the original Stumpjumper and went with Sinyard to Japan to source a producer. To make the Stumpjumper suitable for mass-production, the frame was TiG welded instead of fillet-brazed a technique used for many custom frames of the time.
This reduced labor and manufacturing costs. Today, the original Stumpjumper is historically significant enough to be on display in the Smithsonian. Ned Overend's race-winning Stumpjumper M2. Over the years, legendary racers like Ned Overend and Christoph Sauser have ridden the Stumpjumper to victory in major cross country events. A carbon arm extends around the right side of the rear shock adding support and lateral stiffness for better tracking through rough terrain.
The Stumpjumper uses a mm fork. There is a flip-chip in the rear shock yoke to adjust between high and low geometry positions. Alloy frames are available for entry-level builds and carbon frames for Comp, Pro, and S-Works builds.
When it was discontinued, riders eagerly awaited a successor. The Hightower finally arrived ina transitional period in mountain biking. My personal 29er Hightower CC saw a lot of use. But unlike the old Tallboy, the new bike took design notes from the more downhill-focused, The Hightower was longer and slacker, and it functioned in the line-up more like a big-wheeled version of the Bronson than a hopped-up XC bike.
It used a mm fork for 29ers and a mm fork for It soon became popular for riders to slack out 29" Hightowers with mm and mm forks, and some even used longer-stroke shocks to increase rear travel. People were hungry for a Hightower that offered a bit more downhill capability so Santa Cruz responded with the Hightower LT, a long-travel version with mm of rear travel.
Geometry has been further tweaked to make the newest Hightower the most capable downhiller yet. The frame is available in high-end carbon CC, carbon C, and aluminum versions. Mountain bike geometry has evolved a lot in the last five years.Drop in modern sink
In response, both Specialized and Santa Cruz modernized their flagship trail bikes by making them even longer and slacker. The Stumpjumper 29 and the Hightower have the same amount of suspension travel, so geometry is the biggest differentiator between them.
Because the Hightower is so much longer and slacker than the Stumpjumper, it is in line with current trends for downhill-capable trail bikes. The Hightower also has a steeper seat tube. Current trends have been pushing seat tubes steeper and steeper to improve climbing performance. High positions steepen the head tube and raise the bottom bracket, improving maneuverability.
Low positions slack out the head tube and lower the bottom bracket, improving stability. Chip position comes down to personal preference. High is generally better for enhancing pedaling and climbing characteristics, while low is better for improving control and confidence on steep and fast descents. It comes in two sizes with more reach and an ultra-slack Specialized introduced FSR suspension over 20 years ago.
FSR is also referred to as a "four-bar" suspension or "Horst-link" design. This type of system is easy to identify because the rear axle is located on the seat stay and another pivot is positioned just in front of and below the rear axle.
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