Stumpjumper 15 Pro Review: Best Mountain Bike for Advanced Riders

SPECIALIZED
Revolutionary Breakthrough: GENIE Suspension Technology seamlessly blends the lively responsiveness of an all-mountain bike with the bottomless feel of a downhill machine.

Unmatched Control: The Stumpjumper EVO’s trail-tracking capabilities have been significantly elevated, surpassing even the “Bike of the Year” status it previously held.

Customizable Setup: With six geometry adjustments on a single bike—options for mixed wheel sizes or 29” wheels, adjustable suspension curves, and more—you can tailor your ride to perfectly match your preferences.

The GENIE Magic Carpet Ride: A key update on the Stumpjumper 15 is GENIE, our proprietary and patent-pending air spring technology designed to fulfill every trail rider’s dream. It delivers the plush feel and control of a coil spring, superior bottom-out protection compared to standard air springs, and adjustable “platform” settings for enhanced fun.

What Bumps? GENIE outperforms traditional air-sprung shocks by improving bump management by approximately 16.3%, making the Stumpy 15 ride like a bike with longer travel. For example, the Stumpjumper 15 (with around 145mm of rear travel) and our Enduro (with about 170mm of travel) both use roughly 101mm of travel to absorb impacts of approximately 1080 Newtons.

Traction Redefined: Extensive real-world testing shows that the Stumpjumper 15 with GENIE technology enhances traction by approximately 57% over standard air-sprung shocks. This is due to GENIE’s smooth, coil-like performance, which keeps the wheels in contact with the ground far longer than conventional air springs.

Goodbye Bottom-Outs: GENIE reduces severe bottom-outs by approximately 39% compared to standard air springs. Its steep rise curve during the last 30% of its travel is especially effective against large impacts. Thanks to its two-stage progression rate, GENIE minimizes both the frequency and severity of bottom-outs.

Wheel Choices: With our aftermarket linkages, you can choose between the rolling speed, traction, and efficiency of larger front and rear wheel sizes or opt for a 27.5” rear wheel for a livelier, more playful ride. Regardless of your choice, the geometry and suspension characteristics remain nearly unaffected, ensuring the Stumpjumper 15 retains its signature balance.

Carry It All: The SWAT 4.0 system on the Stumpjumper 15 has expanded downtube storage capacity, refining our original innovation. It now operates smoother and offers greater durability against the elements.

– Lightweight FACE 11m carbon fiber frame and rear triangle
– Lightweight and durable Roval Traverse SL wheelset with Industry Nine 1/1 hubs
– FOX FLOAT Factory rear shock fine-tuned for Ride Dynamics, powered by Specialized GENIE suspension technology. Features three-position compression damping adjustment and a pedal platform switch
– FOX FLOAT 36 Factory fork with GRIP X2 damping, offering exceptional support and high adjustability
– SRAM X0 Eagle T-Type AXS drivetrain for silky-smooth and precise shifting
– Powerful braking courtesy of SRAM Maven Silver four-piston calipers
– Bike Yoke Revive Max dropper post with minimal stack height for maximum trail enjoyment