bike geometry

Impulso 2026

Name: Impulso 2026
Brand: Bianchi

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

Bianchi › Impulso › Standard › Impulso

Impulso 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 Impulso?

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
Impulso geometry	XS	376.7 mm	RideDNA-derived
Impulso geometry	LG	400.6 mm	RideDNA-derived
Impulso geometry	XL	414.4 mm	RideDNA-derived
Impulso geometry	SM	378.2 mm	RideDNA-derived
Impulso geometry	MD	391.4 mm	RideDNA-derived

What is the stack of the Impulso?

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
Impulso geometry	XS	516.1 mm	RideDNA-derived
Impulso geometry	LG	578.6 mm	RideDNA-derived
Impulso geometry	XL	607.1 mm	RideDNA-derived
Impulso geometry	SM	533.1 mm	RideDNA-derived
Impulso geometry	MD	553 mm	RideDNA-derived

What is the effective top tube of the Impulso?

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
Impulso geometry	XS	515 mm	RideDNA-derived
Impulso geometry	LG	572 mm	RideDNA-derived
Impulso geometry	XL	600 mm	RideDNA-derived
Impulso geometry	SM	526 mm	RideDNA-derived
Impulso geometry	MD	550 mm	RideDNA-derived

What is the head tube angle of the Impulso?

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
Impulso geometry	XS	70.5 °	RideDNA-derived
Impulso geometry	LG	71.5 °	RideDNA-derived
Impulso geometry	XL	72 °	RideDNA-derived
Impulso geometry	SM	70.5 °	RideDNA-derived
Impulso geometry	MD	71.5 °	RideDNA-derived

What is the seat tube angle of the Impulso?

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
Impulso geometry	XS	75 °	RideDNA-derived
Impulso geometry	LG	73.5 °	RideDNA-derived
Impulso geometry	XL	73 °	RideDNA-derived
Impulso geometry	SM	74.5 °	RideDNA-derived
Impulso geometry	MD	74 °	RideDNA-derived

What is the wheelbase of the Impulso?

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

Configuration	Size	Wheelbase	Source
Impulso geometry	XS	1006.9 mm	RideDNA-derived
Impulso geometry	LG	1043.7 mm	RideDNA-derived
Impulso geometry	XL	1063.7 mm	RideDNA-derived
Impulso geometry	SM	1014.4 mm	RideDNA-derived
Impulso geometry	MD	1025 mm	RideDNA-derived

What is the chainstay length of the Impulso?

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
Impulso geometry	XS	419.2 mm	RideDNA-derived
Impulso geometry	LG	420.2 mm	RideDNA-derived
Impulso geometry	XL	422.2 mm	RideDNA-derived
Impulso geometry	SM	419.2 mm	RideDNA-derived
Impulso geometry	MD	419.2 mm	RideDNA-derived

What is the bottom bracket height of the Impulso?

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
Impulso geometry	XS	281 mm	RideDNA-derived
Impulso geometry	LG	281 mm	RideDNA-derived
Impulso geometry	XL	281 mm	RideDNA-derived
Impulso geometry	SM	281 mm	RideDNA-derived
Impulso geometry	MD	281 mm	RideDNA-derived

What is the front center of the Impulso?

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

Configuration	Size	Front center	Source
Impulso geometry	XS	591.9 mm	RideDNA-derived
Impulso geometry	LG	627.4 mm	RideDNA-derived
Impulso geometry	XL	645.3 mm	RideDNA-derived
Impulso geometry	SM	599.3 mm	RideDNA-derived
Impulso geometry	MD	609.8 mm	RideDNA-derived

What is the fork offset of the Impulso?

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
Impulso geometry	XS	50 mm	RideDNA-derived
Impulso geometry	LG	50 mm	RideDNA-derived
Impulso geometry	XL	50 mm	RideDNA-derived
Impulso geometry	SM	50 mm	RideDNA-derived
Impulso geometry	MD	50 mm	RideDNA-derived

What is the head tube length of the Impulso?

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
Impulso geometry	XS	100 mm	RideDNA-derived
Impulso geometry	LG	162 mm	RideDNA-derived
Impulso geometry	XL	190 mm	RideDNA-derived
Impulso geometry	SM	118 mm	RideDNA-derived
Impulso geometry	MD	135 mm	RideDNA-derived

What is the seat tube length of the Impulso?

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
Impulso geometry	XS	410 mm	RideDNA-derived
Impulso geometry	LG	520 mm	RideDNA-derived
Impulso geometry	XL	550 mm	RideDNA-derived
Impulso geometry	SM	450 mm	RideDNA-derived
Impulso geometry	MD	490 mm	RideDNA-derived

What is the standover height of the Impulso?

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
Impulso geometry	XS	710.5 mm	RideDNA-derived
Impulso geometry	LG	793.2 mm	RideDNA-derived
Impulso geometry	XL	821.2 mm	RideDNA-derived
Impulso geometry	SM	737.9 mm	RideDNA-derived
Impulso geometry	MD	766.6 mm	RideDNA-derived

What is the fork length of the Impulso?

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

Configuration	Size	Fork length	Source
Impulso geometry	XS	391 mm	RideDNA-derived
Impulso geometry	LG	391 mm	RideDNA-derived
Impulso geometry	XL	391 mm	RideDNA-derived
Impulso geometry	SM	391 mm	RideDNA-derived
Impulso geometry	MD	391 mm	RideDNA-derived

What is the wheel flop of the Impulso?

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

Configuration	Size	Wheel flop	Source
Impulso geometry	XS	22.4 mm	RideDNA-derived
Impulso geometry	LG	19.5 mm	RideDNA-derived
Impulso geometry	XL	18.1 mm	RideDNA-derived
Impulso geometry	SM	22.4 mm	RideDNA-derived
Impulso geometry	MD	19.5 mm	RideDNA-derived

Geometry

Available sizes: XS, LG, XL, SM, MD.

Impulso geometry

Jump to size: XS · XL · LG · MD · SM

Impulso 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	376.7 mm	516.1 mm	515 mm	70.5 °	75 °	—	1006.9 mm	419.2 mm	—	281 mm	591.9 mm	50 mm	100 mm	410 mm	710.5 mm	391 mm	22.4 mm	—
XL	414.4 mm	607.1 mm	600 mm	72 °	73 °	—	1063.7 mm	422.2 mm	—	281 mm	645.3 mm	50 mm	190 mm	550 mm	821.2 mm	391 mm	18.1 mm	—
LG	400.6 mm	578.6 mm	572 mm	71.5 °	73.5 °	—	1043.7 mm	420.2 mm	—	281 mm	627.4 mm	50 mm	162 mm	520 mm	793.2 mm	391 mm	19.5 mm	—
MD	391.4 mm	553 mm	550 mm	71.5 °	74 °	—	1025 mm	419.2 mm	—	281 mm	609.8 mm	50 mm	135 mm	490 mm	766.6 mm	391 mm	19.5 mm	—
SM	378.2 mm	533.1 mm	526 mm	70.5 °	74.5 °	—	1014.4 mm	419.2 mm	—	281 mm	599.3 mm	50 mm	118 mm	450 mm	737.9 mm	391 mm	22.4 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.

Impulso geometry: XS → XL — Reach +37.7 mm, Stack +91 mm, ETT +85 mm, HTA +1.5 °, STA -2 °, Wheelbase +56.8 mm, Chainstay +3 mm, BB height +0 mm, Front center +53.4 mm, Fork offset +0 mm, Head tube +90 mm, Seat tube +140 mm, Standover +110.7 mm, Fork length +0 mm, Wheel flop -4.3 mm
Impulso geometry: XL → LG — Reach -13.8 mm, Stack -28.5 mm, ETT -28 mm, HTA -0.5 °, STA +0.5 °, Wheelbase -20 mm, Chainstay -2 mm, BB height +0 mm, Front center -17.9 mm, Fork offset +0 mm, Head tube -28 mm, Seat tube -30 mm, Standover -28 mm, Fork length +0 mm, Wheel flop +1.4 mm
Impulso geometry: LG → MD — Reach -9.2 mm, Stack -25.6 mm, ETT -22 mm, HTA +0 °, STA +0.5 °, Wheelbase -18.7 mm, Chainstay -1 mm, BB height +0 mm, Front center -17.6 mm, Fork offset +0 mm, Head tube -27 mm, Seat tube -30 mm, Standover -26.6 mm, Fork length +0 mm, Wheel flop +0 mm
Impulso geometry: MD → SM — Reach -13.2 mm, Stack -19.9 mm, ETT -24 mm, HTA -1 °, STA +0.5 °, Wheelbase -10.6 mm, Chainstay +0 mm, BB height +0 mm, Front center -10.5 mm, Fork offset +0 mm, Head tube -17 mm, Seat tube -40 mm, Standover -28.7 mm, Fork length +0 mm, Wheel flop +2.9 mm

RideDNA-derived values

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

Impulso geometry size XS stack Reach Ratio: 1.37
Impulso geometry size LG stack Reach Ratio: 1.44
Impulso geometry size XL stack Reach Ratio: 1.47
Impulso geometry size SM stack Reach Ratio: 1.41
Impulso geometry size MD stack Reach Ratio: 1.41