2021 Bombtrack Bicycle Company Audax Base

	XS	S	M	L	XL
Stack	534mm	553mm	574mm	590mm	609mm
Reach	361mm	373mm	384mm	396mm	408mm
Stack to Reach Ratio	1.48:1	1.48:1	1.49:1	1.49:1	1.49:1
Seat Tube Length, C-T	470mm	490mm	520mm	550mm	580mm
Top Tube Length, Effective/Horizontal Center	504mm	519mm	544mm	566mm	593mm
Top Tube Slope	9.5deg	9.1deg	8deg	6.4deg	5.3deg
Head Tube Angle	71.5deg	71.5deg	72deg	72deg	72deg
Seat Tube Angle	74.5deg	74.5deg	74deg	74deg	73.5deg
Head Tube Length	105mm	125mm	145mm	170mm	195mm
Bottom Bracket Drop	68mm	68mm	68mm	65mm	65mm
Bottom Bracket Height	271mm	271mm	271mm	274mm	274mm
Chainstay Length	420mm	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.5mm	414.5mm	414.5mm	414.9mm	414.9mm
Front-Center	577mm	595mm	607mm	626mm	643mm
Front-Center Horizontal	572.5mm	590.5mm	603.5mm	622.1mm	640.1mm
Wheelbase	987mm	1005mm	1018mm	1037mm	1055mm
Fork Offset/Rake	53mm	53mm	53mm	53mm	53mm
Fork Length (Axle-To-Crown)	385mm	385mm	385mm	385mm	385mm
Trail	57.5mm mid/neutral	57.5mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral	54.4mm mid/neutral
Mechanical Trail	54.6mm	54.6mm	51.8mm	51.8mm	51.8mm
Wheel Flop	17.3mm	17.3mm	16mm	16mm	16mm
Standover Height	746mm	765mm	793mm	818mm	841mm
Tire to Pedal Spindle	73mm 165 mm cranks	86mm 170 mm cranks	98mm 170 mm cranks	112mm 175 mm cranks	129mm 175 mm cranks
Pedal Spindle to Ground Clearance	106mm 165 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	99mm 175 mm cranks	99mm 175 mm cranks

Published Sizing Recommendations

Height

150 cm

161 cm

160 cm

171 cm

170 cm

181 cm

179 cm

190 cm

188 cm

199 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://bombtrack.com/2021-audax/