2019 Specialized Bicycles Women's Sirrus Sport Step-Through

	S	M	L
Stack	536mm	561mm	590mm
Reach	373mm	383mm	393mm
Stack to Reach Ratio	1.44:1	1.46:1	1.5:1
Seat Tube Length, C-T	400mm	450mm	500mm
Top Tube Length, Effective/Horizontal HT Top	532mm	549mm	568mm
Top Tube Slope	17.4deg	14.2deg	11.7deg
Head Tube Angle	70deg	71deg	71deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg
Head Tube Length	124mm	146mm	176mm
Bottom Bracket Drop	70mm	70mm	70mm
Bottom Bracket Height	273mm	273mm	273mm
Chainstay Length	440mm	440mm	440mm
Chainstay Length Horizontal	434.4mm	434.4mm	434.4mm
Front-Center	601mm	610mm	630mm
Front-Center Horizontal	596.6mm	605.6mm	625.6mm
Wheelbase	1031mm	1040mm	1060mm
Fork Offset/Rake	51mm	51mm	51mm
Fork Length (Axle-To-Crown)	390mm	390mm	390mm
Trail	70.6mm high	64.2mm mid/neutral	64.2mm mid/neutral
Mechanical Trail	66.3mm	60.7mm	60.7mm
Wheel Flop	22.7mm	19.8mm	19.8mm
Standover Height	615mm	625mm	625mm
Tire to Pedal Spindle	93mm 165 mm cranks	97mm 170 mm cranks	117mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 165 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.specialized.com/us/en/womens-sirrus-sport-step-through/p/154535?color=225896-154535

Geometry