Specialized S-Works Crux 5 SRAM RED XPLR

The Specialized S-Works Crux 5 AXS is the fastest gravel race bike ever made—not because it's the lightest, not because it's the most aerodynamic, and not because it handles better than anything else on dirt, but because it delivers the lowest Time to Finish of any gravel bike ever tested. Like a Formula 1 race car, Crux 5 translates more of your effort into speed across real gravel race courses—measured, simulated, and validated with riders, terrain, and race conditions fully accounted for. When the goal is to cross the line first, no gravel bike gets you there faster.

Specialized's Science Club developed a revolutionary approach to gravel performance, abandoning traditional metrics in favor of Time to Finish—a physics-based simulation that predicts total elapsed race time over specific real-world courses using measured inputs from aerodynamics, weight, rolling resistance, surface roughness, environmental conditions, and rider power. The S-Works Crux 5 was benchmarked on Unbound, representing the ultimate stress test with prolonged high-speed sectors, extreme surface variability, fatigue-inducing duration, and race-deciding aerodynamics. The result: Sofia Gomez Villafañe would save up to 9 minutes 58 seconds over Unbound when racing a 2026 Crux 5 versus a Crux 4—purely through equipment.

The FACT 12r carbon frame weighs just 789 grams and incorporates Flow State Design, where tube shapes are precisely tuned to carry load efficiently through insights discovered when engineers noticed consistent deformation patterns as frames "breathed" under load. By optimizing shape instead of adding material, Specialized eliminated unnecessary carbon layers while improving ride quality and structural integrity. At 6.9kg complete, the S-Works Crux 5 stands alone at the top of the gravel lightweight category, delivering 15.2 watts of aerodynamic advantage at 45 kph through wind tunnel-proven tube sculpting that drew directly from Tarmac SL8 learnings.

The bike features unparalleled ride quality with telepathic handling and instantaneous acceleration, matched to the exact stiffness and compliance targets of the universally loved Crux 4 while adding aero performance. Rider-first engineering delivers size-specific carbon layup from 49–61cm for consistent stiffness, compliance, and handling across all sizes. Progressive geometry includes a slacker head angle, steeper seat angle, longer reach, and lower BB drop, while 55mm tire clearance paired with Roval Terra Aero CLX wheels allows athletes to run the right tire for any course with zero aerodynamic penalty.

Perfect for elite gravel racers pursuing performance beyond limits, the S-Works Crux 5 AXS combines SRAM RED XPLR AXS wireless electronic shifting, Roval Terra Aero CLX wheels, integrated Terra cockpit, and ceramic speed DUB bottom bracket and headset bearings for a complete race-winning machine engineered with relentless pursuit of performance.

Key Features

• Frame - FACT 12r Carbon (789g) with Flow State Design and Rider-First Engineering
  
• Drivetrain - SRAM RED XPLR AXS Wireless Electronic 12-Speed
  
• Wheelset - Roval Terra Aero CLX with 55mm Tire Clearance Capability