2021 Bombtrack Bicycle Company Audax AL

	XS	S	M	L	XL
Stack	512mm	533mm	561mm	587mm	611mm
Reach	368mm	379mm	390mm	401mm	411mm
Stack to Reach Ratio	1.39:1	1.41:1	1.44:1	1.46:1	1.49:1
Seat Tube Length, C-T	470mm	500mm	530mm	560mm	590mm
Top Tube Length, Effective/Horizontal Center	505mm	527mm	551mm	569mm	592mm
Top Tube Slope	6.8deg	5.7deg	5.5deg	5deg	4.5deg
Head Tube Angle	71deg	72deg	72deg	72deg	72deg
Seat Tube Angle	75deg	74.5deg	74deg	74deg	73.5deg
Head Tube Length	100mm	120mm	150mm	180mm	205mm
Bottom Bracket Drop	70mm	68mm	68mm	65mm	65mm
Bottom Bracket Height	269mm	271mm	271mm	274mm	274mm
Chainstay Length	420mm	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.1mm	414.5mm	414.5mm	414.9mm	414.9mm
Front-Center	581.1mm	589.5mm	610.3mm	629.4mm	647.3mm
Front-Center Horizontal	581mm	590mm	610mm	630mm	647mm
Wheelbase	991mm	1000mm	1021mm	1041mm	1059mm
Fork Offset/Rake	53mm	53mm	53mm	53mm	53mm
Fork Length (Axle-To-Crown)	385mm	385mm	385mm	385mm	385mm
Trail	60.7mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral
Mechanical Trail	57.4mm	51.8mm	51.8mm	51.8mm	51.8mm
Wheel Flop	18.7mm	16mm	16mm	16mm	16mm
Standover Height	728mm	754mm	782mm	812mm	838mm
Tire to Pedal Spindle	72.1mm 170 mm cranks	80.5mm 170 mm cranks	101.3mm 170 mm cranks	120.4mm 170 mm cranks	138.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	104mm 170 mm cranks	104mm 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://bombtrack.com/2021-audax-al/

Geometry