Specialized

Crux 5

Meet the Crux 5, the fastest gravel race bike Specialized has ever built. It wasn't designed around one single breakthrough, but around the only number that actually matters on race day: Time to Finish. Every decision, from the aerodynamic shaping borrowed from the Tarmac SL8 and validated in the Win Tunnel, to the 789g FACT 12r frame* that keeps complete builds starting at just 6.9kg, was made with one outcome in mind: getting you to the line first. The result is a bike that's 15.2 watts faster at race speeds, with race-tuned geometry and 55mm of tire clearance that keeps you riding strong and in control long after others start to fade. In real race conditions over a course like Unbound, that adds up to nearly 10 minutes. For anyone who lines up to win, the Crux 5 is the only bike worth racing.

*S-Works frame only

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Features

Time to Finish. The only metric that matters

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.

Specialized's most aerodynamic gravel bike

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

Nothing is lighter

A 789g FACT 12r frame with complete builds starting at 6.9kg sets the benchmark for gravel weight.

*S-Works Only

Geometry

49 52 54 56 58 61
A Reach 375 382 388 400 412 425
B Stack 530 547 560 578 598 621
C Head Tube Angle 70.5° 70.25° 71° 71.5° 71.5° 71.5°
D Front Centre 594 604 613 626 644 665
E Bottom Bracket Drop 80 80 78 78 78 78
F Wheelbase 1008 1016 1026 1039 1057 1078
G Chainstay Length 425 425 425 425 425 425
H Head Tube Length 95 110 125 142 163 188
I Top Tube Length 512 534 543 566 583 603
J Seat Tube Angle 75.5° 74.5° 74.5° 74° 74° 74°
K Standover Height 753 766 781 803 823 849
All measurements in degrees or millimetres

Sizing Guide

The sizing chart is a great place to start when picking your next bike but everyone will fit a bike a bit differently. Your torso, arm, and leg lengths all play into what size of bike you may need. Plus, there's your own personal preference.

We always recommend swinging by the shop and taking the bike that you're looking for a spin to see how it feels. If you're unable to come by, looking at the geometry of your current bike and comparing it is a good place to start. If you have any further questions, our customer service team is there to help.

Size Height
Imperial Metric
49 5'1" - 5'5" 155 - 163cm
52 5'4" - 5'7" 163 - 170cm
54 5'7" - 5'9" 170 - 175cm
56 5'9" - 5'11" 175 - 180cm
58 5'11" - 6'2" 180 - 188cm
61 6'2" - 6'5" 188 - 196cm

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