S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
S-Works Crux 5
Specialized

S-Works Crux 5

UPC: 196625298448
Colour — Fjord Gold Sandstone Blurred Impasto/Gloss Flake Silver
Size
Size chart
 Size  Rider Height
 49  

155 - 158 cm

5'1" - 5'4"
52  

163 - 168 cm

5'4" - 5'6"
 54  

168 - 175 cm

5'6" - 5'9"
 56  

175 - 183 cm

5'9" - 6'0"
 58  

183 - 191 cm

6'0" - 6'3"
 61  

191 - 198 cm

6'3" - 6'6"


Price
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Pairs well with
Frame:
S-Works Crux 5 FACT 12r Carbon
Fork:
S-Works FACT Carbon
Tires:
Pathfinder 700x45, Tubeless Ready
Wheels:
Roval Terra Aero CLX
Rear Derailleur:
SRAM RED AXS XPLR E1, 13-speed
Brakes:
SRAM RED E1, hydraulic disc
Saddle:
S-Works Power with Mirror
Stem / Handlebar:
Roval Terra Cockpit, Integrated Bar/Stem
Tire Clearance:
700x 55
Sizes:
49, 52, 54, 56, 58, 61
Weight (lbs/kg):
15lb 10.4 oz / 7.1 kg SZ: 56
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The S-Works Crux 5 is the fastest gravel race bike ever made.

The all-new Crux 5 is purpose-built for one outcome: getting riders to the finish line first. Not through one breakthrough, but through the combined effect of weight, aerodynamics, and ride quality working together as a system. 

At the center of it all is a single metric: Time to Finish, a complete measure of real-world speed across actual race conditions. 

This is gravel racing distilled to its purest form. Less wasted energy. More forward speed. When the goal is the top step, nothing gets you there faster. 

What Sets Crux 5 Apart :

Time to Finish. The only metric that matters 
Crux 5 is engineered around real-world race outcomes, not isolated lab numbers. Delivers up to 9:58 faster over Unbound vs. Crux 4. 

This is Specialized's most aerodynamic gravel bike 
Shaped by Tarmac SL8 learnings and validated in the Win Tunnel, Crux 5 is 15.2 watts faster at race speeds. 

Nothing is lighter 
A 789g FACT 12r frame with complete builds starting at 6.9kg sets the benchmark for gravel weight. 

Unparalleled ride quality 
Race-tuned geometry, 55mm tire clearance, and balanced compliance deliver speed riders can sustain deep into the race. 

  • Time to Finish: When the objective is winning races, the goal is brutally simple. Get riders to the finish line faster. For Crux 5, that meant answering one question. Does this bike reduce total race time on the fastest, hardest gravel course on Earth? To answer that, Specialized build the most comprehensive gravel race simulations ever created. The result? Crux 5 is up to 9:58* faster over Unbound (Time savings for Sofía Gómez Villafañe vs Crux 4, assuming same course conditions, and rider input as 2025 Unbound)
  • 15.2 Watts Faster: The Crux 5 is the most aerodynamic gravel race bike Specialized has ever made. Drawing directly from Tarmac SL8 learnings, and decades of aero research, every tube on Crux 5 was sculpted for speed at elite gravel race speeds.

Frameset

  • Frame: S-Works Crux 5 FACT 12r Carbon, Rider First Engineered, Threaded BB, 12x142mm thru-axle, flat-mount disc, UDH dropout

Suspension

  • Fork: S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc

Brakes

  • Front Brake: SRAM RED E1, hydraulic disc
  • Rear Brake: SRAM RED E1, hydraulic disc

Drivetrain

  • Bottom Bracket: Ceramic Speed BB Alpha, BSA DUB
  • Shift Levers: SRAM RED AXS E1, hydraulic disc
  • Rear Derailleur: SRAM RED AXS XPLR E1, 13-speed
  • Chain: SRAM RED E1
  • Cassette: SRAM RED XPLR E1, 13-speed, 10-46t
  • Crankset: SRAM RED XPLR E1, Quarq power meter, 40t

Wheels & tires

  • Inner Tubes: 700x32-50mm, 60mm Presta valve
  • Front Tire: Pathfinder 700x45, Tubeless Ready
  • Rear Tire: Pathfinder 700x45, Tubeless Ready
  • Front Wheel: Roval Terra Aero CLX, 27mm internal width, tubeless ready, 50mm depth, 18h, Roval LF18-F hub with ceramic SINC bearings, Centerlock disc, Roval by ARRIS, Composite Aero Spoke with Ti End Pieces
  • Rear Wheel: Roval Terra Aero CLX, 27mm internal width, tubeless ready, 45mm depth, 24h, Roval LF19-R hub with ceramic SINC bearings, Centerlock disc, Roval by ARRIS, Composite Aero Spoke with Ti End Pieces

Cockpit

  • Stem: Included in Handlebar
  • SeatPost: S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset, Lightweight Saddle Clamp
  • Handlebars: Roval Terra Cockpit, Integrated Bar/Stem
  • Saddle: S-Works Power with Mirror
  • Tape: Supacaz Super Sticky Kush
  • Seat Binder: Integrated Wedge

Weight

  • Weight Size: 56
  • Weight: 7.1 kg (15 lb, 10.4 oz)

9:58 Faster Over Unbound

So what happens when we run the Equation of Speed with:

  • 15.2 watts less aerodynamic drag
  • A 789 gram frame (56cm S-Works)
  • 6.9 kg system weight
  • Hyper-accurate surface telemetry
  • Elite rider power profiles

9:58 saved.

Racing the 2025 Unbound on a 2026 Crux 5 would save Sofía Gómez Villafañe over 9:58—purely through equipment efficiency.

This level of simulation may be unique in cycling, but not in other elite sport. Both Formula 1 and America’s Cup sailing utilize simulation extensively to benchmark and refine performance. Hyper-accurate simulation has been one of the key reasons both of these sports have seen such massive leaps in performance.

A System of Speed

Drawing directly from Tarmac SL8 learnings and decades of aero research, every tube on Crux 5 was sculpted for speed at elite gravel race speeds.

Aero Gains Breakdown:

  • Frame, fork & seatpost: 50%
  • Roval Terra Aero wheels: 30%
  • Roval Terra cockpit: 20%

*15.2 watts as spec’d with our Moving Leg Mannequin at 45 kph. Results may vary up or down depending on individual riders.

The Science Club at our Morgan Hill Innovation Center built mules—preliminary test prototypes that bonded parts of the Crux 4 with parts of the Tarmac SL8. From a Crux 4 with a Tarmac SL8 seat tube and seat post, to a full Tarmac SL8 rear end bonded to a Crux front triangle with a custom aero fork, the Science Club began to hybridize road-level aero gains with gravel-light weight savings.

All those aero gains were validated with the Moving Leg Mannequin, because being fast without a rider is meaningless.

Rider First Engineered

Every size from 49–61cm receives a specific layup based on performance metrics unique to that size—delivering stiffness, compliance, and handling that is consistent across all sizes—because every rider, regardless of height, deserves the same unparalleled performance. 

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