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enSTUMPJUMPER
SINGLETRACK FLOW FINDER
Combining the lightweight efficient DNA of the Epic EVO with the benchmark handling and capability of the new Stumpjumper EVO, the new Stumpjumper is the ultimate singletrack flow finder. It climbs and accelerates like it has a motor, descends with authority, and flat out tears through every conceivable trail condition. There’s never been an all-round trail bike this light, this efficient, this capable.
STUMPJUMPER
SINGLETRACK FLOW FINDER
Combining the lightweight efficient DNA of the Epic EVO with the benchmark handling and capability of the new Stumpjumper EVO, the new Stumpjumper is the ultimate singletrack flow finder. It climbs and accelerates like it has a motor, descends with authority, and flat out tears through every conceivable trail condition. There’s never been an all-round trail bike this light, this efficient, this capable.
THE GEOMETRY OF CONTROL
The generous cockpit centers you on the bike, improving traction and corner control. The low bottom bracket, slack headtube angle and reduced fork offset keep things stable in the rough. A steep seat tube optimizes power output and climbing balance. Short chainstays keep things nimble.
ADJUSTABLE GEOMETRY
To hone handling to your style and terrain, simply switch the FlipChip at the rear shock eye to change bottom bracket height by 7mm and headtube angle by one-half degree. Low and lax delivers more stability, while high and steep makes for a more nimble ride.
ADJUSTABLE GEOMETRY
To hone handling to your style and terrain, simply switch the FlipChip at the rear shock eye to change bottom bracket height by 7mm and headtube angle by one-half degree. Low and lax delivers more stability, while high and steep makes for a more nimble ride.
NOTHING IS LIGHTER AND STIFFER
The frame is the backbone of the bike. It’s the origin of control and efficiency, and it’s the centrepiece of any serious weight saving effort. The full Stumpjumper frame assembly* \(barely\) tips the scales at an unbelievable 2,420g, but we didn’t compromise in our quest for light weight. The Stumpy punches above its weight, setting the bar for mid-travel trail bikes in handling characteristics, pedaling efficiency and trail toughness.
NOTHING IS LIGHTER AND STIFFER
The frame is the backbone of the bike. It’s the origin of control and efficiency, and it’s the centrepiece of any serious weight saving effort. The full Stumpjumper frame assembly* \(barely\) tips the scales at an unbelievable 2,420g, but we didn’t compromise in our quest for light weight. The Stumpy punches above its weight, setting the bar for mid-travel trail bikes in handling characteristics, pedaling efficiency and trail toughness.
*Weight of a production S-4 Stumpjumper frame including paint, shock, assembly hardware, link, carbon extension, molded downtube and chainstay protectors, axle, seat clamp.
HEY LAZY CARBON, BEAT IT!
The shape of a composite frame determines the vast majority of that frame’s weight, stiffness and durability. After crunching countless Finite Element Analysis calculations, we optimized the shape of each of the Stumpy’s frame tubes and their intersections, eliminating “lazy” material that would otherwise hide in unoptimized corners, thereby ensuring that every fiber is delivering the most strength and stiffness it can. The result is maximum performance and minimal weight.
THE CAVIAR OF CARBON FIBER
To achieve breakthrough weight and stiffness goals, the Stumpjumper employs the strongest, most expensive carbon we have ever used in a mountain bike frame. The result? Climbing speed and flickable handling of a lightweight, along with stiffness that delivers wicked pedaling efficiency and telepathic handling. You really can have it all.
RIDER FIRST
Our Rider-First Engineered™ process delivers the optimal balance of tuned stiffness, weight and ride quality from all six sizes, ensuring every rider experiences the same ultimate trail ride characteristics.
SWAT
READY FOR ANYTHING
The SWAT door is a masterpiece of carbon fiber construction and spatial optimization that ensures you’ll be ready for whatever the trail dished out. Conveniently and cleanly stash everything from spare tubes and CO2 cartridges to a windbreaker and a banana (careful with that last one).
SWAT
READY FOR ANYTHING
The SWAT door is a masterpiece of carbon fiber construction and spatial optimization that ensures you’ll be ready for whatever the trail dished out. Conveniently and cleanly stash everything from spare tubes and CO2 cartridges to a windbreaker and a banana (careful with that last one).
SUSPENSION OF DISBELIEF
130mm of Rx-Tuned rear travel delivers a ride feel that is lively and balanced, yet capable of absorbing big hits unlike any other mid-travel trail bike. Thanks to the combination of the progressive leverage ratio and mildly progressive spring rate what you feel on the trail is a playful, snappy ride for the first two-thirds of travel, then - thanks to the increasing spring rate - excellent bump force management and resistance to bottoming in big events. Believe it.
SUSPENSION OF DISBELIEF
130mm of Rx-Tuned rear travel delivers a ride feel that is lively and balanced, yet capable of absorbing big hits unlike any other mid-travel trail bike. Thanks to the combination of the progressive leverage ratio and mildly progressive spring rate what you feel on the trail is a playful, snappy ride for the first two-thirds of travel, then - thanks to the increasing spring rate - excellent bump force management and resistance to bottoming in big events. Believe it.
Rx TUNE
YOUR PRESCRIPTION FOR FLOW
Our trail obsessed team of engineers stay awake at night thinking of how to make suspension work better. For the Stumpjumper they tailored every aspect that contributes to final suspension characteristics – kinematics, leverage curves, damping and spring rates – to work together in harmony to deliver a highly controlled, responsive and precise ride that handles bump forces like a bike with far more travel.
Rx TUNE
YOUR PRESCRIPTION FOR FLOW
Our trail obsessed team of engineers stay awake at night thinking of how to make suspension work better. For the Stumpjumper they tailored every aspect that contributes to final suspension characteristics – kinematics, leverage curves, damping and spring rates – to work together in harmony to deliver a highly controlled, responsive and precise ride that handles bump forces like a bike with far more travel.
S-SIZING
S-Sizing is based on what matters; rider size and style, not inseam. Six sizes, all with similar headtube lengths and standover allow you to choose the size that best suits your individual style. Smaller S-Size numbers are going to be more nimble, thanks to their shorter reach and front-center measurement, while bigger S-Sizes deliver more stability and a roomier ride.
SHRED IN SILENCE
You won’t realize how much chain-slap was bumming your ride until it’s gone. Our chainstay protector makes the drivetrain virtually silent by disrupting the sine-wave of an unchecked chain clattering away in the rough. The result is the transcendent silence of one hand clapping.
THE ULTIMATE (ALLOY) TRAIL BIKE
Shaped by everything we’ve learned from 40 years of building Stumpjumpers, the alloy Stumps are 100% purebred, cutting edge trail bikes. A look under the hood bears this out: they employ the same benchmark geo, Rx-Tuned suspension, ride quality, and S-sizing as their carbon siblings. So it should come as no surprise that the alloy Stumpjumpers pack a trail performance punch beyond what you’ll find from any other aluminum trail bike.
THE ULTIMATE (ALLOY) TRAIL BIKE
Shaped by everything we’ve learned from 40 years of building Stumpjumpers, the alloy Stumps are 100% purebred, cutting edge trail bikes. A look under the hood bears this out: they employ the same benchmark geo, Rx-Tuned suspension, ride quality, and S-sizing as their carbon siblings. So it should come as no surprise that the alloy Stumpjumpers pack a trail performance punch beyond what you’ll find from any other aluminum trail bike.
FINISH AND THE FEELS
The graphics on the Stumpjumpers are inspired by the mountainous terrain that we love to ride. We wanted to capture the way light plays in nature; how it can cast the mountains in jagged relief but also soften and smooth depending on how the light hits, illuminating both hard lines and subtle fades. Multiple coats of ultra-high-quality paint result in a finish so smooth and deep it feels like you could dive into it.
FINISH AND THE FEELS
The graphics on the Stumpjumpers are inspired by the mountainous terrain that we love to ride. We wanted to capture the way light plays in nature; how it can cast the mountains in jagged relief but also soften and smooth depending on how the light hits, illuminating both hard lines and subtle fades. Multiple coats of ultra-high-quality paint result in a finish so smooth and deep it feels like you could dive into it.
STUMPJUMPER CREATORS
Being tasked with creating the rippingest trail bike we’ve ever made is no small feat. Steve Saletnik, Peter Denk, Matthias Segerer, Chance Ferro, Kayla Clarot, Luke Beemer, Fred Chiu, Tero Jakku, and more than a dozen others dug into every aspect of engineering, suspension dynamics, design, and R&D to do exactly that.