2022 Chirp Chirp Cycles Lark Base

	XS	S	M	L
Stack	525mm	553mm	580mm	604mm
Reach	369mm	378mm	385mm	391mm
Stack to Reach Ratio	1.42:1	1.46:1	1.51:1	1.54:1
Seat Tube Length, C-T	506mm	528mm	554mm	577mm
Top Tube Length, Effective/Horizontal Center	530.4mm	548mm	562.5mm	597.8mm
Top Tube Length, Actual C-C	511mm	528mm	542mm	576mm
Top Tube Slope	10deg	10deg	10deg	10deg
Head Tube Angle	71.5deg	72deg	72.5deg	72.5deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	80mm	108mm	134mm	160mm
Bottom Bracket Drop	78mm	78mm	78mm	78mm
Bottom Bracket Height	288mm	288mm	288mm	288mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	438.1mm	438.1mm	438.1mm	438.1mm
Front-Center	579mm	593mm	603mm	617mm
Front-Center Horizontal	572.9mm	586.9mm	596.9mm	611.9mm
Wheelbase	1011mm	1025mm	1035mm	1050mm
Fork Offset/Rake	51.5mm	51.9mm	51.1mm	52mm
Fork Length (Axle-To-Crown)	395mm	395mm	395mm	395mm
Trail	68.1mm high	64.4mm mid/neutral	61.8mm mid/neutral	60.9mm mid/neutral
Mechanical Trail	64.6mm	61.2mm	58.9mm	58.1mm
Wheel Flop	20.5mm	18.9mm	17.7mm	17.5mm
Tire to Pedal Spindle	43mm 170 mm cranks	57mm 170 mm cranks	67mm 170 mm cranks	81mm 170 mm cranks
Pedal Spindle to Ground Clearance	118mm 170 mm cranks	118mm 170 mm cranks	118mm 170 mm cranks	118mm 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.chirpchirpcycles.com

Geometry