Specialized Crux

Wheel Size: 700c | Tire Clearance: Up to 55mm

The all-new Specialized Crux 5 is the fastest gravel race bike Specialized has ever made, built for riders who want more speed, efficiency, and capability across demanding gravel courses. Inspired by the acceleration and responsiveness of the Tarmac, the new Crux is designed to reduce real-world Time to Finish by combining aerodynamics, low weight, race-tuned geometry, and rider-inclusive testing.

Using Specialized's Equation of Speed approach, the Crux 5 brings together aero tube shaping, a lightweight carbon frame, and clearance for up to 55mm gravel tires. The latest S-Works Crux frame weighs just 789 grams, with complete builds starting at 6.9kg, giving riders a gravel bike that climbs quickly, accelerates instantly, and stays composed over rough terrain.

Compared to the previous generation, the new Specialized Crux is claimed to be 15.2 watts faster at race speed, with nearly 10 minutes of simulated time savings over the Unbound Gravel course. Developed with wind tunnel testing, Moving Leg Mannequin validation, and real-world gravel race telemetry, the Crux 5 is built for riders chasing podiums, personal records, or a faster day on mixed terrain.

Specialized Crux
8 Results
Availability
Brand
Category
Build Type
Bike Size
Color
Model Year
Availability
Brand
Category
Build Type
Bike Size
Color
Model Year

Highlights and information

SPECIALIZED CRUX 5: GRAVEL, REFINED TO ITS LIGHTEST FORM

Wheel size: 700c | Tire clearance: up to 55mm | Frame: FACT 10r or 12r Carbon

The all-new Specialized Crux 5 is built around one objective: delivering the fastest real-world Time to Finish of any gravel bike Specialized has ever tested. Inspired by the philosophy behind the Tarmac SL8 and engineered specifically for elite gravel racing, the Crux 5 combines class-leading aerodynamics, an ultralight chassis, progressive race geometry, and massive tire clearance into one uncompromising race machine.

This isn’t just the lightest gravel bike. It isn’t just the most aerodynamic. The Crux 5 is the complete package, translating more of your effort into forward speed across real race conditions, real terrain, and real gravel courses. Whether chasing podiums, personal records, or bragging rights, the Crux 5 has one message for the competition: Eat My Dust.

WHY THE SPECIALIZED CRUX 5 STANDS OUT

Specialized developed the Crux 5 using its “Equation of Speed,” a comprehensive performance model focused on the only metric that truly matters: Time to Finish. By combining rider-inclusive aerodynamics, real-world surface telemetry, rolling resistance data, and weight optimization, the Crux 5 delivers measurable speed advantages over previous generations. Specialized's testing showed the Crux 5 saving up to 9 minutes and 58 seconds over the Unbound Gravel course compared to the previous Crux platform. With 15.2 watts less aerodynamic drag, a 789g frame, complete builds as light as 6.9kg, and clearance for up to 55mm tires, the Crux 5 is purpose-built for modern gravel racing at the highest level.

WHO SHOULD RIDE THE CRUX 5?

The Specialized Crux 5 is designed for riders who prioritize pure gravel race performance. It’s ideal for competitive gravel racers, fast endurance riders, and cyclists seeking a lightweight, responsive bike capable of carrying speed across rough terrain. Blending the explosive acceleration of a road race bike with the stability and tire clearance required for demanding gravel events, the Crux 5 feels equally at home attacking climbs, navigating technical sectors, and sprinting to the finish line after hours of racing.

WHAT CONTENDER BICYCLES LIKES ABOUT THE CRUX 5

  • Fastest Real-World Gravel Race Performance: Developed around Specialized’s Time to Finish simulation system for measurable speed gains across real gravel courses.
  • Aerodynamic Efficiency: The most aerodynamic gravel race bike Specialized has ever produced, incorporating extensive lessons learned from the Tarmac SL8.
  • Exceptionally Lightweight: A 789g S-Works frame and complete builds starting at just 6.9kg deliver explosive climbing and acceleration.
  • Massive Tire Clearance: Clearance for up to 55mm tires provides versatility, traction, and confidence across modern gravel terrain.
  • Race-Tuned Ride Quality: Progressive gravel geometry balances high-speed stability with responsive handling and efficient power transfer.

FRAME MATERIAL

The Specialized Crux 5 utilizes advanced FACT carbon construction and Specialized’s Flow State Design philosophy, first introduced with the Aethos road platform. This approach removes unnecessary material while maintaining stiffness, durability, and exceptional ride quality. The result is one of the lightest gravel race frames ever produced at just 789 grams for the S-Works frame. Despite the low weight, the Crux 5 maintains impressive capability with aerodynamic shaping, integrated race-focused features, and clearance for modern high-volume gravel tires.

GEOMETRY AND FIT

The Specialized Crux 5 features race-tuned progressive gravel geometry engineered for maximum speed across demanding terrain.

  • Efficient Power Transfer: The lightweight chassis and responsive carbon construction reward hard accelerations and sustained climbing efforts.
  • Stable High-Speed Handling: Progressive geometry and wide tire compatibility provide confidence across rough descents and loose surfaces.
  • Balanced Gravel Race Positioning: The Crux 5 strikes a balance between aggressive road race efficiency and all-day gravel control, creating a platform capable of performing across a wide range of race conditions.

HIGHLIGHTED MODELS AND COMPONENTS

Specialized S-Works Crux 5

  • Frame: FACT 12r Carbon (789 grams)
  • Drivetrain: SRAM RED XPLR AXS
  • Wheels: Roval Terra Aero CLX

Specialized Crux 5 Expert

  • Frame: FACT 10r Carbon (897 grams)
  • Drivetrain: SRAM Force XPLR AXS
  • Wheels: Roval Terra C III

Specialized S-Works Crux 5 Frameset

  • Frame: FACT 12r Carbon (789 grams)

NOT EXACTLY WHAT YOU’RE LOOKING FOR?

  • Specialized Diverge: A more adventure-focused gravel bike emphasizing comfort, storage, and long-distance versatility.
  • Specialized Tarmac SL8: A pure road race machine optimized for aerodynamics, climbing efficiency, and pavement speed.
  • Cervélo Áspero: A performance-oriented gravel race bike with aggressive handling and race-ready stiffness.

THE BOTTOM LINE

The Specialized Crux 5 redefines gravel race performance by focusing on the only metric that matters: Time to Finish. Combining aerodynamic efficiency, ultralight construction, progressive geometry, and real-world race simulation, the Crux 5 delivers measurable speed advantages where it counts most—on course, under pressure, and at race pace. For riders seeking the fastest gravel race bike Specialized has ever built, the Crux 5 stands at the front of the pack.

Specialized Bikes
Specialized Media
Specialized Crux 5 in red at an angle.
Specialized Crux 5 in red and black with tan sidewall tires.
Specialized Crux ridden by two pro athletes.
Talk to an expert
Two men looking at a photo on a phone in a bike shop
talk to one of our Experts Today

At Contender Bicycles, our best tools for selling bikes are the people who ride them. Everyone at Contender Bicycles has extensive experience riding bikes across many brands. If you have any questions or want to discuss build options, we are here to help.