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IINTRODUCING STUMPJUMPER 15
One Bike To Rule All Trails
Breakthrough Capability
GENIE Shock Technology combines a poppy, playful ride with a bottomless DH feel
Ultimate Control
Measurably better traction than "Bike of the Year" Stumpjumper EVO
Unmatched Personalization
Six-way geometry adjust, mixed wheel or 29", tunable spring curve, and more
"The Stumpjumper 15 with GENIE gives me the benefits of a big travel bike and the benefits of a short travel bike in one."
- Allan Cooke
43 Years of Jumpin' Stumps
In '81, we unleashed the first Stumpjumper, flipping the switch on mountain biking worldwide. Fast forward through 43 years of blood, sweat, and dirty-toothed grins, and we're dropping the 15th full-suspension Stumpjumper.
Stumpjumper 15 is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters- you? Check, check, check.
Many (Dirty) Hands,
One (Awesome) Bike
Over 50 R&D teammates, each and every one a trail rider,
worked for more than three years to develop the all-new
Stumpjumper 15.
Evidence- Based Performance for Riders
Thank God Some Kids Stayed in Science Club
The Specialized Science Club creates our full-suspension bikes by developing the chassis, geometry, kinematics, and suspension components as an integrated whole, delivering unmatched performance to riders. While they touched every aspect of the Stumpjupmer 15, their crown jewel is GENIE- a best-of-both-worlds suspension tech marvel that'll have you floating overtrails like a magic carpet ride.
Thank god, indeed.
" This Stumpy keeps expanding my perception of how hard it can be ridden. It's nuts. It begs you to air into sections that you used to brake into." - Matt Hunter
Breakthrough
Capability
Handles bumps better than 'Bike of the Year' Stumpjumper EVO
Suspension, geometry, chassis, sizing, and spec work together to calmly dispatch every condition from big hits to steep descents to technical climbs.
GENIE - The Magic
Carpet Ride
Grants Every Trail Rider's Three Wishes
- - Coil spring bump performance
- - Air spring bottom-out prevention
- -Tunable platform for a poppy feel
Best of Both Worlds with GENIE
Poppy and Playful, plus a Bottomless DH Feel.
GENIE is a patent-pending air-spring shock technology that we invented. It combines the control-enhancing linear spring rate of a coil spring thorugh the "bump zone" with the progressive spring rate of an air spring at the end of the storke to avoid bottom-outs. Truly, it's the best of both worlds- coil and air - with extra tuneability. Say goodbye to compromises and hello to the future of riding.
" THE ALL-NEW STUMPJUMPER WITH GENIE FEELS LIKE IT HAS SO MUCH MORE TRAVEL THAN IT DOES ON PAPER. THAT THING EATS THROUGH TRAILS!"
- GEORGIA LESLIE, SPECIALIZED UK BRAND MANAGER
Eats Bumps Like an Enduro
16.3% better bump force management than 'Bike of the Year' Stumpjumper EVO
Eats Bumps Like an Enduro
16.3% better bump force management than 'Bike of the Year' Stumpjumper EVO
GENIE makes the Stumpy 15 ride like a bike with more travel because it actually does eat most bumps like a bigger-travel bike. For example, the Stumpjumper 15 (with 145 mm rear wheel travel) and our Endro (170 mm travel) both use 101 mm of the travel to absorb a 1080 N bump force. Same bump, same travel used, game changed.
Stickier Than Your
Ex's Instagram Likes
57% Better Traction Than a Standard Air Spring
Stickier Than Your Ex's
Instgram Likes
57% Better Traction Than a Standard Air Spring
GENIE delivers 57% less traction loss time' than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would. Contact equals traction, and traction equals control.
"Traction loss time" is the sum of all times the rear wheel is slipping with respect to the front. It is measured by comparing front and rear wheel rotational speeds while riding.
Bye, Bye, Bottom Outs
GENIE makes harsh bottom-outs vanish
"GENIE lets me run lower pressure to smooth out the trail, but it's there on the big stuff when I need it. It nearly eliminates bottom-outs, and when it does, it's never harsh." - Matt Hunter
Bye, Bye, Bottom Outs
30% fewer severe bottom outs compared to a standard air spring*
During big hit events, you benefit from the rising rate in the last 30% of the GENIE stroke. Because of the to-stage, pronounced rising rate, GENIE reduces the frequency and severity of bottom-outs.
"Severe Bottom Out" is defined as bottom-out events where the shock bottom lasts for one-tenth of a second or more.
Crush Like a Big Bike,
Jib Like a Jumper
GENIE Devours Bumps and Provides a Playful Platform
GENIE provides a platform you can trust in the turns or when pumping the backside. The second-stage rising rate makes for a fun, playful bike that can still plow like a bike with much more travel. Truly "best of both worlds" rideability.
"One of my favorite traits of the new Stumpy is that it somehow manages to feel both soft and poppy. Those used to be opposites. - Matt Hunter
Crush Like a Big Bike, Jib Like a Jumper
GENIE Devours Bumps and Provides a Playful Platform
GENIE provides a platform you can trust in the turns or when pumping the backside. The second-stage rising rate makes for a fun, playful bike that can still plow like a bike with much more travel. Truly "best of both worlds" rideability.
With both air chambers open, GENIE air volume is massive, resulting in a much flatter spring curve for the first 70% of the shock's stroke.
With 30% storke remaining, an internal band closes the ports to the secondary air chamber, reducing the overall volume and increasing the spring rate.
The last 30% of stroke has a significantly more progressive spring rate, preventing bottom-outs and providing a platform for stability and a poppy feel.
Grade On a Curve, GENIE Gets an "A"
Spring Curve Detail
The graph illustrates the relationship between bump force and wheel travel of Stumpjumper 15 and Stumpjumper EVO. Note that 1,080 Newton impact force results in 101 MM of travel on the Stumpjumper 15 and Enduro, whereas the Stumpjumper EVO only uses 87 MM of travel to absorb the same force.
Grade On a Curve, GENIE Gets an "A"
Spring Curve Detail
Compared to other air shocks on the market, GENIE allows for a lower spring rate earlier in the stroke, with a hgiher ramp later in the ending stroke (see graph). This means that with GENIE's "softer spring," we will use more travel to absorb the same amount of energ, resulting in superior bump-force management and better control.
Frame of Reference
Form Follows Fun
We engineered the FACT 11M carbon – front end, rear end, and the link between them – as a single unit that hits the stiffness target we established for trail riding.
Anti Squat
The Ride Dynamics team establishes optimal anti-squat targets for each riding experience. As the quintessential trail bike, Stumpjumper 15 balances efficiency and optimal bump force management. We found the sweet spot after analyzing extensive quantitative data and qualitative feedback.
Who Says You Can't Take it With You?
SWAT
The SWAT 4.0 of the Stumpjumper 15 elevates downtube storage. It's the smoothest operating, most weather-resistant, flush-mounted system on the planet.
Capability and
Control by the Numbers
Geometry Honed to Rule All Trails
The Stumpjumper 15 geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockipt centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough. Three rear-center dimensions across the size range optimize handling for riders of different sizes.
Have it Your Way
Benchmark Geo Adjustability
Seamlessly integrated adjustability makes Stumpjumper 15 the most personalizable trail bike ever. Six distinct geometry settings allow you to hone its performance for any style, any terrain. The head angle is adjustable to three settings between 63 and 65.5 degrees via a unique eccentric upper headset cup. Fine-tune the bottom bracket height up or down by 7mm by swapping the Horst link chips. Drop it down for a more stable ride, or set it high for clearance.
S-Sizing
Select the Size that Suits Your Style (Not Your Inseam)
S-Sizing is based on what matters: rider style, not inseam. Six sizes, all with similar head tube lengths and standover, allow you to choose the size that best suits how you ride. Smaller S-Size numbers will be more nimble, thanks to their shorter reach and front-center measurement, while bigger S-Sizes deliver more stability and a roomier ride.
Wheel Good
Big Wheels or Mixed, You Choose
With our aftermarket shock links, you can choose between big wheels front and rear or mix things up with a 27.5" rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.
Stumpjumper 15 rolls on Traverse SL II Wheels
Carefully Engineered to be Ridden Recklessly
Smoother is Faster
The Traverse SL II delivers terrain-hugging and bump-force absorbing control through its 21% greater vertical compliance, made possible by the shallow and wide rim shape and front/rear specific layup. The new rim also boasts a 15% increase in front wheel strength and 25% rear wheel strength compared to its predecessor. Additionally, the rim shape is engineered to "ankle,"providing adaptive rotation for improved traction and control.
Flats Be Gone
Spend your time on the trail instead of next to it. The patent-pending, optimized "Flat Top" bead profile of Traverse wheels significantly reduces pinch flats by requiring an impressive 85% more force compared to a standard round bead.
Air Time
Thank our genius engineer Chuck Teixeira for inventing the "Roval ThreadBed Valve." a valve that threads directly into the rim, eliminating compression nuts and air loss from rim flex, making tire set-up easier, and reducing sealant clogs.
Butcher Grid Trail T9
Stumpjumper 15 Front
World Cup-proven aggressive tread design to bite and gripin any condition. Ramped and siped, the center tread blocks provide maximum traction and accurate steering. The sawtooth-faced shoulder knobs offer a continuous biting edge for railing through corners.
Eliminator Grid Trail T9
Stumpjumper 15 rear
The Eliminator tread pattern strikes the perfect balance of grip and fast rolling for the back end of a trail bike. Aggressive center and intermediate black design transition smoothly to side knobs delivering traction, speed, and predictability in soft to hardpack conditions.
IINTRODUCING STUMPJUMPER 15
One Bike To Rule All Trails
"The Stumpjumper 15 with GENIE gives me the benefits of a big travel bike and the benefits of a short travel bike in one."
- Allan Cooke
43 Years of Jumpin' Stumps
In '81, we unleashed the first Stumpjumper, flipping the switch on mountain biking worldwide. Fast forward through 43 years of blood, sweat, and dirty-toothed grins, and we're dropping the 15th full-suspension Stumpjumper.
Stumpjumper 15 is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters- you? Check, check, check.
Many (Dirty) Hands,
One (Awesome) Bike
Over 50 R&D teammates, each and every one a trail rider,
worked for more than three years to develop the all-new
Stumpjumper 15.
Evidence- Based Performance for Riders
Thank God Some Kids Stayed in Science Club
The Specialized Science Club creates our full-suspension bikes by developing the chassis, geometry, kinematics, and suspension components as an integrated whole, delivering unmatched performance to riders. While they touched every aspect of the Stumpjupmer 15, their crown jewel is GENIE- a best-of-both-worlds suspension tech marvel that'll have you floating overtrails like a magic carpet ride.
Thank God, indeed.
" This Stumpy keeps expanding my perception of how hard it can be ridden. It's nuts. It begs you to air into sections that you used to brake into."
- Matt Hunter
Breakthrough
Capability
Handles bumps better than 'Bike of the Year' Stumpjumper EVO
Suspension, geometry, chassis, sizing, and spec work together to calmly dispatch every condition from big hits to steep descents to technical climbs.
GENIE - The Magic
Carpet Ride
Grants Every Trail Rider's Three Wishes
-
- Coil spring bump performance
-
- Air spring bottom-out prevention
-
-Tunable platform for a poppy feel
Best of Both Worlds with GENIE
Poppy and Playful, plus a Bottomless DH Feel.
GENIE is a patent-pending air-spring shock technology that we invented. It combines the control-enhancing linear spring rate of a coil spring thorugh the "bump zone" with the progressive spring rate of an air spring at the end of the storke to avoid bottom-outs. Truly, it's the best of both worlds- coil and air - with extra tuneability. Say goodbye to compromises and hello to the future of riding.
" THE ALL-NEW STUMPJUMPER WITH GENIE FEELS LIKE IT HAS SO MUCH MORE TRAVEL THAN IT DOES ON PAPER. THAT THING EATS THROUGH TRAILS!"
- GEORGIA LESLIE, SPECIALIZED UK BRAND MANAGER
Eats Bumps Like an Enduro
16.3% better bump force management than 'Bike of the Year' Stumpjumper EVO
Eats Bumps Like an Enduro
16.3% better bump force management than 'Bike of the Year' Stumpjumper EVO
GENIE makes the Stumpy 15 ride like a bike with more travel because it actually does eat most bumps like a bigger-travel bike. For example, the Stumpjumper 15 (with 145 mm rear wheel travel) and our Endro (170 mm travel) both use 101 mm of the travel to absorb a 1080 N bump force. Same bump, same travel used, game changed.
Stickier Than Your
Ex's Instagram Likes
57% Better Traction Than a Standard Air Spring
Stickier Than Your Ex's
Instgram Likes
57% Better Traction Than a Standard Air Spring
GENIE delivers 57% less traction loss time' than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would. Contact equals traction, and traction equals control.
"Traction loss time" is the sum of all times the rear wheel is slipping with respect to the front. It is measured by comparing front and rear wheel rotational speeds while riding.
Bye, Bye, Bottom Outs
GENIE makes harsh bottom-outs vanish
"GENIE lets me run lower pressure to smooth out the trail, but it's there on the big stuff when I need it. It nearly eliminates bottom-outs, and when it does, it's never harsh." - Matt Hunter
Bye, Bye, Bottom Outs
30% fewer severe bottom outs compared to a standard air spring*
During big hit events, you benefit from the rising rate in the last 30% of the GENIE stroke. Because of the to-stage, pronounced rising rate, GENIE reduces the frequency and severity of bottom-outs.
"Severe Bottom Out" is defined as bottom-out events where the shock bottom lasts for one-tenth of a second or more.
Crush Like a Big Bike,
Jib Like a Jumper
GENIE Devours Bumps and Provides a Playful Platform
GENIE provides a platform you can trust in the turns or when pumping the backside. The second-stage rising rate makes for a fun, playful bike that can still plow like a bike with much more travel. Truly "best of both worlds" rideability.
"One of my favorite traits of the new Stumpy is that it somehow manages to feel both soft and poppy. Those used to be opposites. - Matt Hunter
Crush Like a Big Bike,
Jib Like a Jumper
GENIE Devours Bumps and Provides a Playful Platform
GENIE provides a platform you can trust in the turns or when pumping the backside. The second-stage rising rate makes for a fun, playful bike that can still plow like a bike with much more travel. Truly "best of both worlds" rideability.
With both air chambers open, GENIE air volume is massive, resulting in a much flatter spring curve for the first 70% of the shock's stroke.
With 30% storke remaining, an internal band closes the ports to the secondary air chamber, reducing the overall volume and increasing the spring rate.
The last 30% of stroke has a significantly more progressive spring rate, preventing bottom-outs and providing a platform for stability and a poppy feel.
Grade On a Curve,
GENIE Gets an "A"
Spring Curve Detail
Compared to other air shocks on the market, GENIE allows for a lower spring rate earlier in the stroke, with a hgiher ramp later in the ending stroke (see graph). This means that with GENIE's "softer spring," we will use more travel to absorb the same amount of energ, resulting in superior bump-force management and better control.
Grade On a Curve,
GENIE Gets an "A"
Spring Curve Detail
Compared to other air shocks on the market, GENIE allows for a lower spring rate earlier in the stroke, with a hgiher ramp later in the ending stroke (see graph). This means that with GENIE's "softer spring," we will use more travel to absorb the same amount of energ, resulting in superior bump-force management and better control.
Frame of Reference
Form Follows Fun
We engineered the FACT 11M carbon – front end, rear end, and the link between them – as a single unit that hits the stiffness target we established for trail riding.
Anti Squat
The Ride Dynamics team establishes optimal anti-squat targets for each riding experience. As the quintessential trail bike, Stumpjumper 15 balances efficiency and optimal bump force management. We found the sweet spot after analyzing extensive quantitative data and qualitative feedback.
Who Says You Can't
Take it With You?
SWAT
The SWAT 4.0 of the Stumpjumper 15 elevates downtube storage. It's the smoothest operating, most weather-resistant, flush-mounted system on the planet.
Capability and
Control by the Numbers
Geometry Honed to Rule All Trails
The Stumpjumper 15 geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockipt centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough. Three rear-center dimensions across the size range optimize handling for riders of different sizes.
Have it Your Way
Benchmark Geo Adjustability
Seamlessly integrated adjustability makes Stumpjumper 15 the most personalizable trail bike ever. Six distinct geometry settings allow you to hone its performance for any style, any terrain. The head angle is adjustable to three settings between 63 and 65.5 degrees via a unique eccentric upper headset cup. Fine-tune the bottom bracket height up or down by 7mm by swapping the Horst link chips. Drop it down for a more stable ride, or set it high for clearance.
S-Sizing
Select the Size that Suits Your Style (Not Your Inseam)
S-Sizing is based on what matters: rider style, not inseam. Six sizes, all with similar head tube lengths and standover, allow you to choose the size that best suits how you ride. Smaller S-Size numbers will be more nimble, thanks to their shorter reach and front-center measurement, while bigger S-Sizes deliver more stability and a roomier ride.
Wheel Good
Big Wheels or Mixed, You Choose
With our aftermarket shock links, you can choose between big wheels front and rear or mix things up with a 27.5" rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.
Stumpjumper 15 rolls on Traverse SL II Wheels
Carefully Engineered to be Ridden Recklessly
Smoother is Faster
The Traverse SL II delivers terrain-hugging and bump-force absorbing control through its 21% greater vertical compliance, made possible by the shallow and wide rim shape and front/rear specific layup. The new rim also boasts a 15% increase in front wheel strength and 25% rear wheel strength compared to its predecessor. Additionally, the rim shape is engineered to "ankle,"providing adaptive rotation for improved traction and control.
Flats Be Gone
Spend your time on the trail instead of next to it. The patent-pending, optimized "Flat Top" bead profile of Traverse wheels significantly reduces pinch flats by requiring an impressive 85% more force compared to a standard round bead.
Air Time
Thank our genius engineer Chuck Teixeira for inventing the "Roval ThreadBed Valve." a valve that threads directly into the rim, eliminating compression nuts and air loss from rim flex, making tire set-up easier, and reducing sealant clogs.
Butcher Grid Trail T9
Stumpjumper 15 Front
World Cup-proven aggressive tread design to bite and gripin any condition. Ramped and siped, the center tread blocks provide maximum traction and accurate steering. The sawtooth-faced shoulder knobs offer a continuous biting edge for railing through corners.
Eliminator Grid Trail T9
Stumpjumper 15 rear
The Eliminator tread pattern strikes the perfect balance of grip and fast rolling for the back end of a trail bike. Aggressive center and intermediate black design transition smoothly to side knobs delivering traction, speed, and predictability in soft to hardpack conditions.