bike geometry

Crux 4 2025

Name: Crux 4 2025
Brand: Specialized

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 Crux 4?

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	RideDNA-derived

What is the stack of the Crux 4?

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 Crux 4?

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	RideDNA-derived
Crux 4 geometry	54	549 mm	RideDNA-derived
Crux 4 geometry	61	599 mm	RideDNA-derived
Crux 4 geometry	52	539 mm	RideDNA-derived
Crux 4 geometry	56	568 mm	RideDNA-derived
Crux 4 geometry	49	512 mm	RideDNA-derived

What is the head tube angle of the Crux 4?

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 °	RideDNA-derived
Crux 4 geometry	54	71.5 °	RideDNA-derived
Crux 4 geometry	61	72.5 °	RideDNA-derived
Crux 4 geometry	52	71.25 °	RideDNA-derived
Crux 4 geometry	56	72 °	RideDNA-derived
Crux 4 geometry	49	70.5 °	RideDNA-derived

What is the seat tube angle of the Crux 4?

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 °	RideDNA-derived
Crux 4 geometry	54	74 °	RideDNA-derived
Crux 4 geometry	61	73.5 °	RideDNA-derived
Crux 4 geometry	52	74 °	RideDNA-derived
Crux 4 geometry	56	73.5 °	RideDNA-derived
Crux 4 geometry	49	75.5 °	RideDNA-derived

What is the wheelbase of the Crux 4?

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	RideDNA-derived
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 Crux 4?

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	418.9 mm	RideDNA-derived
Crux 4 geometry	54	418.9 mm	RideDNA-derived
Crux 4 geometry	61	418.9 mm	RideDNA-derived
Crux 4 geometry	52	418.5 mm	RideDNA-derived
Crux 4 geometry	56	418.9 mm	RideDNA-derived
Crux 4 geometry	49	418.5 mm	RideDNA-derived

What is the bottom bracket height of the Crux 4?

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 Crux 4?

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	RideDNA-derived
Crux 4 geometry	49	594 mm	RideDNA-derived

What is the fork offset of the Crux 4?

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	RideDNA-derived
Crux 4 geometry	54	50 mm	RideDNA-derived
Crux 4 geometry	61	50 mm	RideDNA-derived
Crux 4 geometry	52	50 mm	RideDNA-derived
Crux 4 geometry	56	50 mm	RideDNA-derived
Crux 4 geometry	49	50 mm	RideDNA-derived

What is the head tube length of the Crux 4?

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	RideDNA-derived
Crux 4 geometry	54	130 mm	RideDNA-derived
Crux 4 geometry	61	190 mm	RideDNA-derived
Crux 4 geometry	52	115 mm	RideDNA-derived
Crux 4 geometry	56	147 mm	RideDNA-derived
Crux 4 geometry	49	100 mm	RideDNA-derived

What is the seat tube length of the Crux 4?

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	RideDNA-derived
Crux 4 geometry	54	521 mm	RideDNA-derived
Crux 4 geometry	61	606 mm	RideDNA-derived
Crux 4 geometry	52	496 mm	RideDNA-derived
Crux 4 geometry	56	546 mm	RideDNA-derived
Crux 4 geometry	49	466 mm	RideDNA-derived

What is the standover height of the Crux 4?

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 Crux 4?

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	RideDNA-derived
Crux 4 geometry	54	401 mm	RideDNA-derived
Crux 4 geometry	61	401 mm	RideDNA-derived
Crux 4 geometry	52	401 mm	RideDNA-derived
Crux 4 geometry	56	401 mm	RideDNA-derived
Crux 4 geometry	49	401 mm	RideDNA-derived

What is the wheel flop of the Crux 4?

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 °	—	1007.9 mm	418.5 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 °	—	1014 mm	418.5 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 °	—	1023.3 mm	418.9 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 °	—	1032.6 mm	418.9 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 °	—	1044.6 mm	418.9 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 °	—	1059.4 mm	418.9 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.

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 °, Wheelbase +6.1 mm, Chainstay +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 °, Wheelbase +9.3 mm, Chainstay +0.4 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 °, Wheelbase +9.3 mm, Chainstay +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 °, Wheelbase +12 mm, Chainstay +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 °, Wheelbase +14.8 mm, Chainstay +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 manufacturer inputs above. They are separate from manufacturer 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