Specialized Crux geometryGravel · 2026 · 6 sizes, from 49 to 61

The Specialized Crux is a gravel bike available in 6 sizes, from 49 to 61. Stack ranges from 530 to 621 mm and reach from 375 to 425 mm. Its position sits between racing and endurance. All sizes share 425 mm chainstays.

Stack530–621mm

Reach375–425mm

Head angle70.5–71.5°

Chainstay length425mm

Steep seat angleLow BB

What size Crux do I need?

Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.

Stack in mm Reach in mm Compare on Fitbikefy →

49S 530 · R 375

52S 547 · R 382

54S 560 · R 388

56S 578 · R 400

58S 598 · R 412

61S 621 · R 425

Enter your stack and reach to see which size fits you best.

Geometry chart by size

Measurements in mm and degrees, as published by Specialized. The ones that matter most for choosing a size are in bold.

Size	49	52	54	56	58	61
Stack	530	547	560	578	598	621
Reach	375	382	388	400	412	425
Effective top tube	512	534	543	566	583	603
Head tube length	95	110	125	142	163	188
Head angle	70.5°	70.8°	71.0°	71.5°	71.5°	71.5°
Chainstay length	425	425	425	425	425	425
Wheelbase	1,008	1,016	1,026	1,039	1,057	1,078
Front centre	594	604	613	626	644	665
BB drop	80	80	78	78	78	78
BB height	278	278	280	280	280	280
Fork length	401	401	401	401	401	401
Fork offset	51	51	51	51	51	51
Trail	72	71	69	66	66	66
Standover	753	766	781	803	823	849
Seat tube (method not stated)	445	456	473	497	515	545
Seat angle (method not stated)	75.5°	74.5°	74.5°	74.0°	74.0°	74.0°

Source: Specialized official website · data from 11 Nov 2026.

Stack and reach of every size

Higher means a taller front end; further right means a longer reach. The blue dot is your search.

Character of each size

Compared with other gravel bikes. Further right means more of that quality.

Positionracing → relaxed

Steeringcalm → quick

Pedallingrearward → forward

Bottom brackethigh → low

Wheelbaselively → planted

Rear endstable → agile

Bikes with similar geometry (size 54)

The closest size of other gravel models, by stack and reach.

ModelΔ stackΔ reach

Specialized S-Works Crux · 542026±0 mm±0 mmCompare →

Specialized Crux DSW · 542026±0 mm±0 mmCompare →

Orbea Terra · M2027+0 mm+1 mmCompare →

Wilier Triestina Rave SLR ID2 · M2027+1 mm−1 mmCompare →

Factor SARANA · 522026−2 mm±0 mmCompare →

Ridley Kanzo Adventure Alu · S2024±0 mm+2 mmCompare →

Crux or S-Works Crux? In size 54 they have exactly the same stack and reach (560 / 388 mm): the difference is in the frame and build, not the position.

Frequently asked questions

What size Crux do I need?

It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 530/375 mm in size 49 to 621/425 mm in size 61). The size finder on this page shows the closest size and the stem and spacers you would need.

What are the stack and reach of the Crux in size 54?

Stack of 560 mm and reach of 388 mm, with an effective top tube of 543 mm and a head angle of 71.0°.

Is the Crux a racing or an endurance bike?

In between. In size 54 its stack-to-reach ratio is at percentile 34 of gravel bikes: neither very low nor very tall.

Does it have the same geometry as the S-Works Crux?

In size 54, yes: same stack and reach. If one already fits you, the same size of the other will put you in the same position.