Specialized Stumpjumper 15 Alloy 2025

Hit the trails like the pros with the Stumpjumper 15 Alloy. This bike ticks all the boxes: it eats up bumps like a long-travel bike, it’s precise, fun and efficient with just the right amount of travel and offers plenty of customization options to make this bike the ultimate mountain bike for you. Saddle up and dominate the trails.

ADVANCED KINEMATICS — The quintessential trail bike, the Stumpjumper 15 Alloy combines performance with optimal impact management. When it comes to anti-squat, we found the perfect balance between the previous Stumpjumper and the Stumpjumper EVO, two bikes that are synonymous with excellence in pedaling efficiency.

OPTIMIZED GEOMETRY: The geometry of this bike offers great capability when you need it, a nimble feel in twisty sections and a lively and efficient climbing ability. Wide handlebars center you on the bike, maximizing traction and control through corners. A low bottom bracket, slack rake, and optimized fork offset keep the bike stable through rough sections.

RIDE YOUR WAY — The Stumpjumper 15 Alloy’s easily adjustable geometry makes it the most customizable trail bike ever. Six different geometry settings let you tailor its performance to any riding style and terrain. The rake and bottom bracket height can also be adjusted to provide more or less stability or clearance.

FORM FOLLOWS FUN — We can make a super-stiff frame, but we can’t overdo it. To be one with your bike, you need a frame that’s designed to give you maximum comfort. We developed each part of our M5 aluminum chassis (front, rear and mid link) individually to meet the stiffness requirements of trail bikes.

WHEEL SIZE — All coilover models come with mixed-gear wheels. WHEEL

CHOICE — With our separately available linkages, you can choose the speed, traction and benefits of big wheels front and rear (option available on S3, S4, S5, S6), or opt for mixed-gear wheels with a 27.5" rear wheel for a more responsive and fun ride. No matter what you choose, changing wheel size won't affect the geometry of the Stumpjumper 15.

GO ALL GEARED UP — Our innovative SWAT storage hatch increases the Stumpjumper 15's downtube storage capabilities.

TOUGHER THAN YOU — Our suspension bikes are built to be tough, offer unmatched durability, and take a beating for years to come. In addition to these technical advantages, Specialized also goes the extra mile to ensure you enjoy the trails for years to come with our customer service, policies, and warranties, which include, for example, replacement of your suspension pivot bearings upon request.

• New M5 aluminum frame equipped with an integrated SWAT storage hatch
• X-Fusion 02 Pro RL shock optimized by the Ride Dynamics team with adjustable rebound and lockout
• RockShox Psylo Silver fork equipped with Motion Control shock absorbers
• Ultra-reliable Shimano MT-420 4-piston brakes
• Shimano Deore 12-speed groupset
• Lifetime bearing warranty.