Why the Specialized Stumpjumper 15?

The Stumpjumper 15 upholds the legacy of one of the most iconic names in mountain biking. Hailed as the ultimate trail bike, the new Stumpjumper absorbs bumps like a heavyweight, delivering a smooth ride. It combines the agility, control, and efficiency of a short-travel bike, making it highly versatile. Engineered for adaptability, its geometry allows for the capability of a larger bike when needed, agility in tight sections, and efficient climbing. The spacious cockpit enhances traction and cornering control, while the low bottom bracket, slack head tube angle, and optimised fork offset ensure stability on rough terrain.

The standout feature of the Stumpjumper 15 is the GENIE air spring technology, which grants every trail rider’s three wishes: the feel and control of a coil spring, superior bottom-out prevention compared to a standard air spring, and a tunable platform for a playful ride. The GENIE technology merges the linear spring rate of a coil spring with the progressive rate of an air spring, preventing bottom-outs and offering exceptional tunability. This results in 16.3% better bump force management, making the Stumpjumper 15 feel like a bike with more travel. Extensive testing has shown it delivers 57% better traction and 39% fewer bottom-outs compared to standard air springs.

  1. Front Travel: 150mm
  2. Rear Travel: 145mm
  3. Wheel size: 29" & MX

Technical Details

New for the Stumpjumper 15 is the GENIE rear shock. Working with Fox, Specialized designed the GENIE rear shock. This shock features a higher air volume that allows the bike to feel nice and supple in the early and mid-stroke while quickly ramping up when needed, drastically reducing bottom-out while improving traction.

  • Genie Shock Technology
  • SWAT 4.0 Equipped
  • 6-Way Adjustable Geometry
  • Mullet Compatible

Geometry

S1 S2 S3 S4 S5 S6
A Reach 400 425 450 475 500 530
B Stack 608 618 627 640 654 667
C Headtube Angle 64.5 64.5 64.5 64.5 64.5 64.5
D Seat Tube Length 385 385 405 425 445 465
E Front Center 720 751 780 812 843 879
F Bottom Bracket Height 334 337 337 337 337 337
G Bottom Bracket Drop 41 38 38 38 38 38
H Wheelbase 1149 1181 1213 1244 1285 1322
I Chainstay Length 430 432 435 435 445 445
J Headtube Length 95 100 110 125 140 155
K Top Tube Length 541 573 595 624 647 677
L Seat Tube Angle 77 76.5 77 76.9 77.3 77.6
M Standover Height 738 751 745 745 745 751

*ALL MEASUREMENTS IN DEGREES OR MILLIMETRES

Frame Sizing

The sizing chart is a great place to start when picking your next bike but everyone will fit a bike a bit differently. Your torso, arm, and leg lengths all play into what size of bike you may need. Plus, there's your own personal preference.

We always recommend swinging by the shop and taking the bike that you're looking for a spin to see how it feels. If you're unable to come by, looking at the geometry of your current bike and comparing it is a good place to start. If you have any further questions, our customer service team is there to help.

Size Height
Imperial Metric
S1 4'11" - 5'3" 150 - 160cm
S2 5'2" - 5'8" 157 - 173cm
S3 5'5" - 5'11" 165 - 180cm
S4 5'8" - 6'2" 173 - 188cm
S5 5'10" - 6'4" 178 - 193cm
S6 6'2" - 6'8" 188 - 203cm