2019 Specialized Bicycles Women's Sirrus Base

	XS	S	M	L	XL
Stack	537mm	556mm	581mm	593mm	611mm
Reach	372mm	373mm	383mm	400mm	402mm
Stack to Reach Ratio	1.44:1	1.49:1	1.52:1	1.48:1	1.52:1
Seat Tube Length, C-T	345mm	380mm	425mm	455mm	495mm
Top Tube Length, Effective/Horizontal HT Top	531mm	538mm	555mm	576mm	583mm
Top Tube Slope	23.7deg	21.7deg	19deg	16.5deg	14.1deg
Head Tube Angle	69.5deg	70deg	71deg	71deg	71.5deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	126mm	144mm	166mm	179mm	196mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	273mm	273mm	273mm	273mm	273mm
Chainstay Length	440mm	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	434.4mm	434.4mm	434.4mm	434.4mm	434.4mm
Front-Center	605mm	608mm	617mm	638mm	641mm
Front-Center Horizontal	601.6mm	604.6mm	612.6mm	634.6mm	637.6mm
Wheelbase	1036mm	1039mm	1047mm	1069mm	1072mm
Fork Offset/Rake	51mm	51mm	51mm	51mm	51mm
Fork Length (Axle-To-Crown)	390mm	390mm	390mm	390mm	390mm
Trail	73.8mm high	70.6mm high	64.2mm mid/neutral	64.2mm mid/neutral	61mm mid/neutral
Mechanical Trail	69.1mm	66.3mm	60.7mm	60.7mm	57.8mm
Wheel Flop	24.2mm	22.7mm	19.8mm	19.8mm	18.4mm
Standover Height	690mm	715mm	745mm	775mm	805mm
Tire to Pedal Spindle	97mm 165 mm cranks	100mm 165 mm cranks	104mm 170 mm cranks	125mm 170 mm cranks	128mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 165 mm cranks	108mm 165 mm cranks	103mm 170 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/p/154520?color=225898-154520

Geometry