2025 CHIRU VAGUS Base

	XS	S	M	L	XL
Stack	540mm	554mm	580mm	600mm	622mm
Reach	375mm	379mm	383mm	390mm	400mm
Stack to Reach Ratio	1.44:1	1.46:1	1.51:1	1.54:1	1.56:1
Seat Tube Length, C-T	475mm	500mm	530mm	540mm	560mm
Top Tube Length, Effective/Horizontal HT Top	520mm	535mm	550mm	570mm	590mm
Top Tube Slope	9.3deg	8.1deg	7.7deg	8.6deg	8.7deg
Head Tube Angle	70.25deg	70.5deg	71deg	71.5deg	72.5deg
Seat Tube Angle	75deg	74.25deg	73.5deg	73.3deg	73deg
Head Tube Length	120mm	135mm	160mm	180mm	200mm
Bottom Bracket Drop	71mm	70mm	70mm	70mm	68mm
Bottom Bracket Height	280mm	281mm	281mm	281mm	283mm
Chainstay Length	428mm	430mm	430mm	433mm	433mm
Chainstay Length Horizontal	422.1mm	424.3mm	424.3mm	427.3mm	427.6mm
Front-Center	601.1mm	606.8mm	609.8mm	623.6mm	631.1mm
Front-Center Horizontal	596.9mm	602.7mm	605.7mm	619.7mm	627.4mm
Wheelbase	1019mm	1027mm	1030mm	1047mm	1055mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	395mm	395mm	395mm	395mm	395mm
Trail	78.2mm high	76.6mm high	73.3mm high	70mm high	63.5mm mid/neutral
Mechanical Trail	73.6mm	72.2mm	69.3mm	66.4mm	60.6mm
Wheel Flop	24.9mm	24.1mm	22.6mm	21.1mm	18.2mm
Tire to Pedal Spindle	80.1mm 170 mm cranks	85.8mm 170 mm cranks	88.8mm 170 mm cranks	102.6mm 170 mm cranks	110.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	110mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	113mm 170 mm cranks

Published Sizing Recommendations

Height

155 cm

165 cm

163 cm

172 cm

170 cm

180 cm

178 cm

190 cm

188 cm

200 cm

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.chirubikes.com/kit-cadre/vagus/