bike geometry

Reacto 2026

Name: Reacto 2026
Brand: Merida

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

Merida › Reacto › Standard › Reacto

Reacto 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 Reacto?

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
Reacto geometry	3XS	373.5 mm	RideDNA-derived
Reacto geometry	L	400.4 mm	RideDNA-derived
Reacto geometry	XXS	377.7 mm	RideDNA-derived
Reacto geometry	XS	383.4 mm	RideDNA-derived
Reacto geometry	S	389.7 mm	RideDNA-derived
Reacto geometry	M	395.1 mm	RideDNA-derived
Reacto geometry	XL	409 mm	RideDNA-derived

What is the stack of the Reacto?

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
Reacto geometry	3XS	512.2 mm	RideDNA-derived
Reacto geometry	L	571 mm	RideDNA-derived
Reacto geometry	XXS	516.9 mm	RideDNA-derived
Reacto geometry	XS	528.8 mm	RideDNA-derived
Reacto geometry	S	541.7 mm	RideDNA-derived
Reacto geometry	M	556.6 mm	RideDNA-derived
Reacto geometry	XL	591.9 mm	RideDNA-derived

What is the effective top tube of the Reacto?

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
Reacto geometry	3XS	506 mm	RideDNA-derived
Reacto geometry	L	575 mm	RideDNA-derived
Reacto geometry	XXS	521 mm	RideDNA-derived
Reacto geometry	XS	535 mm	RideDNA-derived
Reacto geometry	S	545 mm	RideDNA-derived
Reacto geometry	M	560 mm	RideDNA-derived
Reacto geometry	XL	590 mm	RideDNA-derived

What is the head tube angle of the Reacto?

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
Reacto geometry	3XS	70.5 °	RideDNA-derived
Reacto geometry	L	73.5 °	RideDNA-derived
Reacto geometry	XXS	70.5 °	RideDNA-derived
Reacto geometry	XS	72 °	RideDNA-derived
Reacto geometry	S	72.5 °	RideDNA-derived
Reacto geometry	M	73.5 °	RideDNA-derived
Reacto geometry	XL	74 °	RideDNA-derived

What is the seat tube angle of the Reacto?

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
Reacto geometry	3XS	75.5 °	RideDNA-derived
Reacto geometry	L	73 °	RideDNA-derived
Reacto geometry	XXS	74.5 °	RideDNA-derived
Reacto geometry	XS	74 °	RideDNA-derived
Reacto geometry	S	74 °	RideDNA-derived
Reacto geometry	M	73.5 °	RideDNA-derived
Reacto geometry	XL	73 °	RideDNA-derived

What is the wheelbase of the Reacto?

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

Configuration	Size	Wheelbase	Source
Reacto geometry	3XS	981.8 mm	RideDNA-derived
Reacto geometry	L	1001.6 mm	RideDNA-derived
Reacto geometry	XXS	987.6 mm	RideDNA-derived
Reacto geometry	XS	983.7 mm	RideDNA-derived
Reacto geometry	S	991.5 mm	RideDNA-derived
Reacto geometry	M	992 mm	RideDNA-derived
Reacto geometry	XL	1011.3 mm	RideDNA-derived

What is the chainstay length of the Reacto?

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
Reacto geometry	3XS	404 mm	RideDNA-derived
Reacto geometry	L	404.7 mm	RideDNA-derived
Reacto geometry	XXS	404 mm	RideDNA-derived
Reacto geometry	XS	404 mm	RideDNA-derived
Reacto geometry	S	404.7 mm	RideDNA-derived
Reacto geometry	M	404.7 mm	RideDNA-derived
Reacto geometry	XL	404.7 mm	RideDNA-derived

What is the bottom bracket height of the Reacto?

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
Reacto geometry	3XS	270 mm	RideDNA-derived
Reacto geometry	L	274 mm	RideDNA-derived
Reacto geometry	XXS	270 mm	RideDNA-derived
Reacto geometry	XS	270 mm	RideDNA-derived
Reacto geometry	S	274 mm	RideDNA-derived
Reacto geometry	M	274 mm	RideDNA-derived
Reacto geometry	XL	274 mm	RideDNA-derived

What is the front center of the Reacto?

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

Configuration	Size	Front center	Source
Reacto geometry	3XS	582.1 mm	RideDNA-derived
Reacto geometry	L	600.6 mm	RideDNA-derived
Reacto geometry	XXS	587.8 mm	RideDNA-derived
Reacto geometry	XS	584 mm	RideDNA-derived
Reacto geometry	S	590.5 mm	RideDNA-derived
Reacto geometry	M	591.1 mm	RideDNA-derived
Reacto geometry	XL	610.2 mm	RideDNA-derived

What is the fork offset of the Reacto?

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
Reacto geometry	3XS	45 mm	RideDNA-derived
Reacto geometry	L	45 mm	RideDNA-derived
Reacto geometry	XXS	45 mm	RideDNA-derived
Reacto geometry	XS	45 mm	RideDNA-derived
Reacto geometry	S	45 mm	RideDNA-derived
Reacto geometry	M	45 mm	RideDNA-derived
Reacto geometry	XL	45 mm	RideDNA-derived

What is the head tube length of the Reacto?

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
Reacto geometry	3XS	100 mm	RideDNA-derived
Reacto geometry	L	155 mm	RideDNA-derived
Reacto geometry	XXS	105 mm	RideDNA-derived
Reacto geometry	XS	112 mm	RideDNA-derived
Reacto geometry	S	128 mm	RideDNA-derived
Reacto geometry	M	140 mm	RideDNA-derived
Reacto geometry	XL	175 mm	RideDNA-derived

What is the seat tube length of the Reacto?

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
Reacto geometry	3XS	440 mm	RideDNA-derived
Reacto geometry	L	560 mm	RideDNA-derived
Reacto geometry	XXS	470 mm	RideDNA-derived
Reacto geometry	XS	500 mm	RideDNA-derived
Reacto geometry	S	520 mm	RideDNA-derived
Reacto geometry	M	540 mm	RideDNA-derived
Reacto geometry	XL	590 mm	RideDNA-derived

What is the standover height of the Reacto?

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
Reacto geometry	3XS	712.4 mm	RideDNA-derived
Reacto geometry	L	801 mm	RideDNA-derived
Reacto geometry	XXS	728.4 mm	RideDNA-derived
Reacto geometry	XS	748.3 mm	RideDNA-derived
Reacto geometry	S	768.4 mm	RideDNA-derived
Reacto geometry	M	784.8 mm	RideDNA-derived
Reacto geometry	XL	827 mm	RideDNA-derived

What is the fork length of the Reacto?

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

Configuration	Size	Fork length	Source
Reacto geometry	3XS	385 mm	RideDNA-derived
Reacto geometry	L	385 mm	RideDNA-derived
Reacto geometry	XXS	385 mm	RideDNA-derived
Reacto geometry	XS	385 mm	RideDNA-derived
Reacto geometry	S	385 mm	RideDNA-derived
Reacto geometry	M	385 mm	RideDNA-derived
Reacto geometry	XL	385 mm	RideDNA-derived

What is the wheel flop of the Reacto?

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

Configuration	Size	Wheel flop	Source
Reacto geometry	3XS	22.9 mm	RideDNA-derived
Reacto geometry	L	14.6 mm	RideDNA-derived
Reacto geometry	XXS	22.9 mm	RideDNA-derived
Reacto geometry	XS	18.6 mm	RideDNA-derived
Reacto geometry	S	17.2 mm	RideDNA-derived
Reacto geometry	M	14.6 mm	RideDNA-derived
Reacto geometry	XL	13.4 mm	RideDNA-derived

Geometry

Available sizes: 3XS, L, XXS, XS, S, M, XL.

Reacto geometry

Jump to size: XS · S · M · L · XL · 3XS · XXS

Reacto 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
XS	383.4 mm	528.8 mm	535 mm	72 °	74 °	—	983.7 mm	404 mm	—	270 mm	584 mm	45 mm	112 mm	500 mm	748.3 mm	385 mm	18.6 mm	—
S	389.7 mm	541.7 mm	545 mm	72.5 °	74 °	—	991.5 mm	404.7 mm	—	274 mm	590.5 mm	45 mm	128 mm	520 mm	768.4 mm	385 mm	17.2 mm	—
M	395.1 mm	556.6 mm	560 mm	73.5 °	73.5 °	—	992 mm	404.7 mm	—	274 mm	591.1 mm	45 mm	140 mm	540 mm	784.8 mm	385 mm	14.6 mm	—
L	400.4 mm	571 mm	575 mm	73.5 °	73 °	—	1001.6 mm	404.7 mm	—	274 mm	600.6 mm	45 mm	155 mm	560 mm	801 mm	385 mm	14.6 mm	—
XL	409 mm	591.9 mm	590 mm	74 °	73 °	—	1011.3 mm	404.7 mm	—	274 mm	610.2 mm	45 mm	175 mm	590 mm	827 mm	385 mm	13.4 mm	—
3XS	373.5 mm	512.2 mm	506 mm	70.5 °	75.5 °	—	981.8 mm	404 mm	—	270 mm	582.1 mm	45 mm	100 mm	440 mm	712.4 mm	385 mm	22.9 mm	—
XXS	377.7 mm	516.9 mm	521 mm	70.5 °	74.5 °	—	987.6 mm	404 mm	—	270 mm	587.8 mm	45 mm	105 mm	470 mm	728.4 mm	385 mm	22.9 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.

Reacto geometry: XS → S — Reach +6.3 mm, Stack +12.9 mm, ETT +10 mm, HTA +0.5 °, STA +0 °, Wheelbase +7.8 mm, Chainstay +0.7 mm, BB height +4 mm, Front center +6.5 mm, Fork offset +0 mm, Head tube +16 mm, Seat tube +20 mm, Standover +20.1 mm, Fork length +0 mm, Wheel flop -1.4 mm
Reacto geometry: S → M — Reach +5.4 mm, Stack +14.9 mm, ETT +15 mm, HTA +1 °, STA -0.5 °, Wheelbase +0.5 mm, Chainstay +0 mm, BB height +0 mm, Front center +0.6 mm, Fork offset +0 mm, Head tube +12 mm, Seat tube +20 mm, Standover +16.4 mm, Fork length +0 mm, Wheel flop -2.6 mm
Reacto geometry: M → L — Reach +5.3 mm, Stack +14.4 mm, ETT +15 mm, HTA +0 °, STA -0.5 °, Wheelbase +9.6 mm, Chainstay +0 mm, BB height +0 mm, Front center +9.5 mm, Fork offset +0 mm, Head tube +15 mm, Seat tube +20 mm, Standover +16.2 mm, Fork length +0 mm, Wheel flop +0 mm
Reacto geometry: L → XL — Reach +8.6 mm, Stack +20.9 mm, ETT +15 mm, HTA +0.5 °, STA +0 °, Wheelbase +9.7 mm, Chainstay +0 mm, BB height +0 mm, Front center +9.6 mm, Fork offset +0 mm, Head tube +20 mm, Seat tube +30 mm, Standover +26 mm, Fork length +0 mm, Wheel flop -1.2 mm
Reacto geometry: XL → 3XS — Reach -35.5 mm, Stack -79.7 mm, ETT -84 mm, HTA -3.5 °, STA +2.5 °, Wheelbase -29.5 mm, Chainstay -0.7 mm, BB height -4 mm, Front center -28.1 mm, Fork offset +0 mm, Head tube -75 mm, Seat tube -150 mm, Standover -114.6 mm, Fork length +0 mm, Wheel flop +9.5 mm
Reacto geometry: 3XS → XXS — Reach +4.2 mm, Stack +4.7 mm, ETT +15 mm, HTA +0 °, STA -1 °, Wheelbase +5.8 mm, Chainstay +0 mm, BB height +0 mm, Front center +5.7 mm, Fork offset +0 mm, Head tube +5 mm, Seat tube +30 mm, Standover +16 mm, Fork length +0 mm, Wheel flop +0 mm

RideDNA-derived values

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

Reacto geometry size 3XS stack Reach Ratio: 1.37
Reacto geometry size L stack Reach Ratio: 1.43
Reacto geometry size XXS stack Reach Ratio: 1.37
Reacto geometry size XS stack Reach Ratio: 1.38
Reacto geometry size S stack Reach Ratio: 1.39
Reacto geometry size M stack Reach Ratio: 1.41
Reacto geometry size XL stack Reach Ratio: 1.45