Specialized

MY25 Stumpjumper 15 Comp Alloy Mountain Bike

The all-new Stumpjumper 15 Alloy is designed to crush compromises and redefine what's possible in the trail category. Built around Specialized''s patent-pending GENIE air spring technology, this aluminum trail machine combines big-bike bump absorption, short-travel efficiency, and unmatched customization. Whether you''re hitting flowy singletrack or charging rugged descents, the Stumpjumper 15 Alloy delivers the control, comfort, and performance you need to ride at your best.

Key Features:

• GENIE Air Spring Technology - Combines coil-like grip and traction, progressive bottom-out resistance, and independent tuning of mid- and end-stroke support for a balanced, confident ride.
• All-New M5 Alloy Frame - Durable, lightweight aluminum frame with integrated SWAT™ storage and trail-optimized geometry for control, climbing, and comfort.
• Ride Dynamics Tuned Suspension - FOX FLOAT Performance rear shock with 2-position compression adjustment, paired with a FOX FLOAT 36 Rhythm fork featuring the GRIP damper to handle rough terrain with ease.
• Better Bump Management - 16.3% more effective bump absorption than traditional air shocks, reducing rider fatigue and boosting trail confidence.
• Traction Like Never Before - GENIE delivers a 57% improvement in traction by maintaining better contact with the ground - especially on technical or loose trails.
• Bottom-Out Protection - 39% fewer bottom-outs thanks to a rising spring rate in the final third of travel.
• Tuned Geometry - Slack head tube, low bottom bracket, and extended reach create stability at speed, agility in corners, and efficiency on climbs.
• Fully Adjustable - Six-position geometry adjustment allows riders to fine-tune the bike for terrain, riding style, or wheel configuration.
• Wheel Options - Compatible with full 29" or mixed-wheel setups using aftermarket shock links, with geometry unaffected by wheel choice.
• Trail-Ready Components - Shimano SLX drivetrain for reliable, crisp shifting and TRP Trail EVO 4-piston brakes for confident stopping power.
• Dropper Included - X-Fusion Manic dropper post provides reliable saddle height adjustment.
• Lifetime Suspension Pivot Bearing Warranty - Ride worry-free with lifetime bearing replacement for the original owner.