bike geometry

Specialized Crux 4 2025

Compare size-specific bike geometry, including reach, stack, angles, wheelbase and the measurements that influence fit and handling.

Specialized › Crux 4 › Standard › Crux 4

Crux 4 geometry measurements

Choose the recorded size and configuration. Geometry figures can change by size; RideDNA does not collapse those values into one misleading answer.

What is the reach of the Specialized Crux 4 2025?

Reach is the horizontal distance from the bottom bracket to the top of the head tube. Also searched as frame reach.

Configuration	Size	Reach	Source
Crux 4 geometry	58	404.9 mm	RideDNA-derived
Crux 4 geometry	54	388.5 mm	RideDNA-derived
Crux 4 geometry	61	415.2 mm	RideDNA-derived
Crux 4 geometry	52	382.3 mm	RideDNA-derived
Crux 4 geometry	56	396.9 mm	RideDNA-derived
Crux 4 geometry	49	375 mm	Manufacturer-published

What is the stack of the Specialized Crux 4 2025?

Stack is the vertical distance from the bottom bracket to the top of the head tube. Also searched as frame stack.

Configuration	Size	Stack	Source
Crux 4 geometry	58	597.7 mm	RideDNA-derived
Crux 4 geometry	54	559.7 mm	RideDNA-derived
Crux 4 geometry	61	620.6 mm	RideDNA-derived
Crux 4 geometry	52	546.5 mm	RideDNA-derived
Crux 4 geometry	56	577.7 mm	RideDNA-derived
Crux 4 geometry	49	529.6 mm	RideDNA-derived

What is the effective top tube of the Specialized Crux 4 2025?

Effective top tube is the horizontal distance between the head-tube and seat-tube centerlines. Also searched as ETT, virtual top tube, horizontal top tube.

Configuration	Size	Effective top tube	Source
Crux 4 geometry	58	582 mm	Recorded geometry
Crux 4 geometry	54	549 mm	Recorded geometry
Crux 4 geometry	61	599 mm	Recorded geometry
Crux 4 geometry	52	539 mm	Recorded geometry
Crux 4 geometry	56	568 mm	Recorded geometry
Crux 4 geometry	49	512 mm	Recorded geometry

What is the head tube angle of the Specialized Crux 4 2025?

Head tube angle describes the steering-axis angle relative to the ground. Also searched as HTA, head angle, steering angle.

Configuration	Size	Head tube angle	Source
Crux 4 geometry	58	72.25 °	Recorded geometry
Crux 4 geometry	54	71.5 °	Recorded geometry
Crux 4 geometry	61	72.5 °	Recorded geometry
Crux 4 geometry	52	71.25 °	Recorded geometry
Crux 4 geometry	56	72 °	Recorded geometry
Crux 4 geometry	49	70.5 °	Recorded geometry

What is the seat tube angle of the Specialized Crux 4 2025?

Seat tube angle describes the seat-tube angle relative to the ground. Also searched as STA, seat angle, effective seat angle.

Configuration	Size	Seat tube angle	Source
Crux 4 geometry	58	73.5 °	Recorded geometry
Crux 4 geometry	54	74 °	Recorded geometry
Crux 4 geometry	61	73.5 °	Recorded geometry
Crux 4 geometry	52	74 °	Recorded geometry
Crux 4 geometry	56	73.5 °	Recorded geometry
Crux 4 geometry	49	75.5 °	Recorded geometry

What is the trail of the Specialized Crux 4 2025?

Trail is the ground distance between the steering-axis intercept and the front tire contact point. Also searched as fork trail, mechanical trail.

Configuration	Size	Trail	Source
Crux 4 geometry	58	59.9 mm	RideDNA-derived
Crux 4 geometry	54	64.7 mm	RideDNA-derived
Crux 4 geometry	61	58.2 mm	RideDNA-derived
Crux 4 geometry	52	66.3 mm	RideDNA-derived
Crux 4 geometry	56	61.5 mm	RideDNA-derived
Crux 4 geometry	49	71.3 mm	RideDNA-derived

What is the wheelbase of the Specialized Crux 4 2025?

Wheelbase is the distance between the front and rear wheel axles. Also searched as axle-to-axle length.

Configuration	Size	Wheelbase	Source
Crux 4 geometry	58	1044.6 mm	RideDNA-derived
Crux 4 geometry	54	1023.3 mm	RideDNA-derived
Crux 4 geometry	61	1059.4 mm	RideDNA-derived
Crux 4 geometry	52	1014 mm	Manufacturer-published
Crux 4 geometry	56	1032.6 mm	RideDNA-derived
Crux 4 geometry	49	1007.9 mm	RideDNA-derived

What is the chainstay length of the Specialized Crux 4 2025?

Chainstay length, also called rear center, is the distance from the bottom bracket to the rear axle. Also searched as Chainstay, rear center, rear centre.

Configuration	Size	Chainstay length	Source
Crux 4 geometry	58	425 mm	Recorded geometry
Crux 4 geometry	54	425 mm	Recorded geometry
Crux 4 geometry	61	425 mm	Recorded geometry
Crux 4 geometry	52	425 mm	Recorded geometry
Crux 4 geometry	56	425 mm	Recorded geometry
Crux 4 geometry	49	425 mm	Recorded geometry

What is the bottom bracket drop of the Specialized Crux 4 2025?

Bottom bracket drop is the vertical distance from the wheel-axle line down to the bottom bracket. Also searched as BB drop.

Configuration	Size	Bottom bracket drop	Source
Crux 4 geometry	58	72 mm	Recorded geometry
Crux 4 geometry	54	72 mm	Recorded geometry
Crux 4 geometry	61	72 mm	Recorded geometry
Crux 4 geometry	52	74 mm	Recorded geometry
Crux 4 geometry	56	72 mm	Recorded geometry
Crux 4 geometry	49	74 mm	Recorded geometry

What is the bottom bracket height of the Specialized Crux 4 2025?

Bottom bracket height is the vertical distance from the ground to the bottom bracket. Also searched as BB height.

Configuration	Size	Bottom bracket height	Source
Crux 4 geometry	58	279 mm	RideDNA-derived
Crux 4 geometry	54	279 mm	RideDNA-derived
Crux 4 geometry	61	279 mm	RideDNA-derived
Crux 4 geometry	52	277 mm	RideDNA-derived
Crux 4 geometry	56	279 mm	RideDNA-derived
Crux 4 geometry	49	277 mm	RideDNA-derived

What is the front center of the Specialized Crux 4 2025?

Front center is the distance from the bottom bracket to the front wheel axle. Also searched as front centre.

Configuration	Size	Front center	Source
Crux 4 geometry	58	629.9 mm	RideDNA-derived
Crux 4 geometry	54	608.7 mm	RideDNA-derived
Crux 4 geometry	61	644.6 mm	RideDNA-derived
Crux 4 geometry	52	600.1 mm	RideDNA-derived
Crux 4 geometry	56	618 mm	Manufacturer-published
Crux 4 geometry	49	594 mm	Manufacturer-published

What is the fork offset of the Specialized Crux 4 2025?

Fork offset is the perpendicular distance between the steering axis and the front axle. Also searched as fork rake, rake.

Configuration	Size	Fork offset	Source
Crux 4 geometry	58	50 mm	Manufacturer-published
Crux 4 geometry	54	50 mm	Manufacturer-published
Crux 4 geometry	61	50 mm	Manufacturer-published
Crux 4 geometry	52	50 mm	Manufacturer-published
Crux 4 geometry	56	50 mm	Manufacturer-published
Crux 4 geometry	49	50 mm	Manufacturer-published

What is the head tube length of the Specialized Crux 4 2025?

Head tube length is the measured length of the frame's head tube. Also searched as Head tube, head tube.

Configuration	Size	Head tube length	Source
Crux 4 geometry	58	167 mm	Recorded geometry
Crux 4 geometry	54	130 mm	Recorded geometry
Crux 4 geometry	61	190 mm	Recorded geometry
Crux 4 geometry	52	115 mm	Recorded geometry
Crux 4 geometry	56	147 mm	Recorded geometry
Crux 4 geometry	49	100 mm	Recorded geometry

What is the seat tube length of the Specialized Crux 4 2025?

Seat tube length is the recorded length of the frame's seat tube; measurement conventions can differ by manufacturer. Also searched as Seat tube, seat tube, frame size.

Configuration	Size	Seat tube length	Source
Crux 4 geometry	58	576 mm	Recorded geometry
Crux 4 geometry	54	521 mm	Recorded geometry
Crux 4 geometry	61	606 mm	Recorded geometry
Crux 4 geometry	52	496 mm	Recorded geometry
Crux 4 geometry	56	546 mm	Recorded geometry
Crux 4 geometry	49	466 mm	Recorded geometry

What is the standover height of the Specialized Crux 4 2025?

Standover height is the ground-to-top-tube height at the manufacturer's stated measurement point. Also searched as Standover, stand over height, standover clearance.

Configuration	Size	Standover height	Source
Crux 4 geometry	58	827.6 mm	RideDNA-derived
Crux 4 geometry	54	782.8 mm	RideDNA-derived
Crux 4 geometry	61	853.5 mm	RideDNA-derived
Crux 4 geometry	52	762.2 mm	RideDNA-derived
Crux 4 geometry	56	803.3 mm	RideDNA-derived
Crux 4 geometry	49	740.7 mm	RideDNA-derived

What is the fork length of the Specialized Crux 4 2025?

Fork length is the axle-to-crown distance recorded for the fork. Also searched as axle to crown, A2C.

Configuration	Size	Fork length	Source
Crux 4 geometry	58	401 mm	Manufacturer-published
Crux 4 geometry	54	401 mm	Manufacturer-published
Crux 4 geometry	61	401 mm	Manufacturer-published
Crux 4 geometry	52	401 mm	Manufacturer-published
Crux 4 geometry	56	401 mm	Manufacturer-published
Crux 4 geometry	49	401 mm	Manufacturer-published

What is the wheel flop of the Specialized Crux 4 2025?

Wheel flop is a calculated steering-geometry value based on trail and head tube angle. Also searched as flop.

Configuration	Size	Wheel flop	Source
Crux 4 geometry	58	17.4 mm	RideDNA-derived
Crux 4 geometry	54	19.5 mm	RideDNA-derived
Crux 4 geometry	61	16.7 mm	RideDNA-derived
Crux 4 geometry	52	20.2 mm	RideDNA-derived
Crux 4 geometry	56	18.1 mm	RideDNA-derived
Crux 4 geometry	49	22.4 mm	RideDNA-derived

Geometry

Available sizes: 58, 54, 61, 52, 56, 49.

Crux 4 geometry

Jump to size: 49 · 52 · 54 · 56 · 58 · 61

Crux 4 geometry geometry by size
Size	Reach	Stack	ETT	HTA	STA	Trail	Wheelbase	Chainstay	BB drop	BB height	Front center	Fork offset	Head tube	Seat tube	Standover	Fork length	Wheel flop	Max tire
49	375 mm	529.6 mm^*	512 mm^‡	70.5 °^‡	75.5 °^‡	71.3 mm^*	1007.9 mm^*	425 mm^‡	74 mm^‡†	277 mm^*†	594 mm	50 mm	100 mm^‡	466 mm^‡	740.7 mm^*	401 mm	22.4 mm^*†	†
52	382.3 mm^*	546.5 mm^*	539 mm^‡	71.25 °^‡	74 °^‡	66.3 mm^*	1014 mm	425 mm^‡	74 mm^‡†	277 mm^*†	600.1 mm^*	50 mm	115 mm^‡	496 mm^‡	762.2 mm^*	401 mm	20.2 mm^*†	†
54	388.5 mm^*	559.7 mm^*	549 mm^‡	71.5 °^‡	74 °^‡	64.7 mm^*	1023.3 mm^*	425 mm^‡	72 mm^‡†	279 mm^*†	608.7 mm^*	50 mm	130 mm^‡	521 mm^‡	782.8 mm^*	401 mm	19.5 mm^*†	†
56	396.9 mm^*	577.7 mm^*	568 mm^‡	72 °^‡	73.5 °^‡	61.5 mm^*	1032.6 mm^*	425 mm^‡	72 mm^‡†	279 mm^*†	618 mm	50 mm	147 mm^‡	546 mm^‡	803.3 mm^*	401 mm	18.1 mm^*†	†
58	404.9 mm^*	597.7 mm^*	582 mm^‡	72.25 °^‡	73.5 °^‡	59.9 mm^*	1044.6 mm^*	425 mm^‡	72 mm^‡†	279 mm^*†	629.9 mm^*	50 mm	167 mm^‡	576 mm^‡	827.6 mm^*	401 mm	17.4 mm^*†	†
61	415.2 mm^*	620.6 mm^*	599 mm^‡	72.5 °^‡	73.5 °^‡	58.2 mm^*	1059.4 mm^*	425 mm^‡	72 mm^‡†	279 mm^*†	644.6 mm^*	50 mm	190 mm^‡	606 mm^‡	853.5 mm^*	401 mm	16.7 mm^*†	†

Length measurements are in millimeters; HTA and STA are in degrees. ETT means effective top tube. Values prioritize RideDNA calculations. * RideDNA calculated (including corrections where published values differ). Unmarked values are manufacturer-published; matching independently calculated values are identified in their source notes. † Manufacturer did not publish this dimension; † alone means no reliable value is available. ‡ Staff reference or source not confirmed; see the source note. Open Geometry Audit for the original published values, calculated geometry, and deltas.

Size-to-size changes

Differences are calculated from the recorded values; they are not fit recommendations.

Crux 4 geometry: 49 → 52 — Reach +7.3 mm, Stack +16.9 mm, ETT +27 mm, HTA +0.75 °, STA -1.5 °, Trail -5 mm, Wheelbase +6.1 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +6.1 mm, Fork offset +0 mm, Head tube +15 mm, Seat tube +30 mm, Standover +21.5 mm, Fork length +0 mm, Wheel flop -2.2 mm
Crux 4 geometry: 52 → 54 — Reach +6.2 mm, Stack +13.2 mm, ETT +10 mm, HTA +0.25 °, STA +0 °, Trail -1.6 mm, Wheelbase +9.3 mm, Chainstay +0 mm, BB drop -2 mm, BB height +2 mm, Front center +8.6 mm, Fork offset +0 mm, Head tube +15 mm, Seat tube +25 mm, Standover +20.6 mm, Fork length +0 mm, Wheel flop -0.7 mm
Crux 4 geometry: 54 → 56 — Reach +8.4 mm, Stack +18 mm, ETT +19 mm, HTA +0.5 °, STA -0.5 °, Trail -3.2 mm, Wheelbase +9.3 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +9.3 mm, Fork offset +0 mm, Head tube +17 mm, Seat tube +25 mm, Standover +20.5 mm, Fork length +0 mm, Wheel flop -1.4 mm
Crux 4 geometry: 56 → 58 — Reach +8 mm, Stack +20 mm, ETT +14 mm, HTA +0.25 °, STA +0 °, Trail -1.6 mm, Wheelbase +12 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +11.9 mm, Fork offset +0 mm, Head tube +20 mm, Seat tube +30 mm, Standover +24.3 mm, Fork length +0 mm, Wheel flop -0.7 mm
Crux 4 geometry: 58 → 61 — Reach +10.3 mm, Stack +22.9 mm, ETT +17 mm, HTA +0.25 °, STA +0 °, Trail -1.7 mm, Wheelbase +14.8 mm, Chainstay +0 mm, BB drop +0 mm, BB height +0 mm, Front center +14.7 mm, Fork offset +0 mm, Head tube +23 mm, Seat tube +30 mm, Standover +25.9 mm, Fork length +0 mm, Wheel flop -0.7 mm

RideDNA-derived values

These deterministic calculations use the recorded inputs above. They are separate from recorded facts and are not fit recommendations.

Crux 4 geometry size 58 stack Reach Ratio: 1.48
Crux 4 geometry size 54 stack Reach Ratio: 1.44
Crux 4 geometry size 61 stack Reach Ratio: 1.49
Crux 4 geometry size 52 stack Reach Ratio: 1.43
Crux 4 geometry size 56 stack Reach Ratio: 1.46
Crux 4 geometry size 49 stack Reach Ratio: 1.41