S-Works Stumpjumper 15 Frameset - FOX FLOAT GENIE Factory

Model Summary

The Stumpjumper 15 is built to erase the usual trail-bike trade-offs: the confidence of a big bike on the descents, the efficiency and playfulness of a short-travel platform on the way back up, and a level of personalisation no other trail bike offers. At its heart is Specialized's patent-pending GENIE shock technology, which combines the supple, linear feel of a coil spring through the mid-stroke with the progressive, bottom-out-resistant character of an air spring — in Specialized's own testing, GENIE delivered measurably better traction than the "Bike of the Year"-winning Stumpjumper EVO. This S-Works Frameset pairs a lightweight FACT 11m Carbon chassis, rear end and link with a factory-tuned FOX FLOAT Factory GENIE shock, six-way geometry adjustment, and integrated SWAT™ 4.0 downtube storage — the ultimate canvas for building your dream trail bike exactly your way.

Key Highlights

• GENIE Shock Technology: A patent-pending air spring that blends coil-like mid-stroke control with a progressive end-stroke, delivering better traction and fewer bottom-outs than a standard air-sprung shock.
• FACT 11m Carbon Chassis: Lightweight carbon front triangle, rear end, and link built for years of hard trail riding.
• Six-Way Geometry Adjustment: Head angle and bottom bracket height can be fine-tuned to dial in stability or clearance for your riding style and terrain.
• SWAT™ 4.0 Downtube Storage: Specialized's most weather-resistant, flush-mounted integrated storage system, purpose-built into the frame.
• Blank-Canvas Frameset: Sold frame-only so you can spec the exact fork, wheels, and build kit you want, with electronic-drivetrain compatibility and SRAM UDH.
• Lifetime Pivot Bearing Warranty: No-questions-asked lifetime replacement of suspension pivot bearings to the original owner.

Technical Specifications

• Frame: FACT 11m Carbon chassis, rear end and link, Trail Geometry, six-way geometry adjustment (head angle + BB height), threaded BB, internal brake/dropper routing, 12x148mm dropouts, SRAM UDH compatible, sealed-cartridge-bearing pivots, 145mm rear-wheel travel
• Rear Shock: FOX FLOAT Factory with Specialized GENIE Shock Technology, Ride Dynamics Trail Tune, 2-position lever with 3-setting Open-mode compression tuning, low-speed rebound adjustment (S1: 210x52.5mm; S2–S6: 210x55mm)
• Recommended Fork: Designed around a 150–160mm-travel fork platform, compatible up to 180mm travel
• Bottom Bracket: Threaded BB (BSA)
• Seat Binder: Alloy, 38.6mm
• Storage: SWAT™ 4.0 integrated downtube storage door
• Drivetrain Compatibility: Electronic drivetrains only
• Included Hardware: Frame, FOX FLOAT Factory GENIE shock, seat binder, and geometry-adjust hardware
• Warranty: Lifetime, no-questions-asked replacement of suspension pivot bearings to the original owner