Compare: 2026 Argon 18 Nitrogen Base XS vs 2023 BXT BX-Road-145 Pro-145 47

Insights

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Nitrogen

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of BXT BX-Road-145

Stack	508mm	508.4mm +0.4mm
Reach	377mm	372mm -5mm
Stack to Reach Ratio	1.35:1	1.37:1
Seat Tube Length, C-T	—	450mm
Seat Tube Length, C-TTT	425mm	—
Top Tube Length, Effective/Horizontal Center	519mm	512mm -7mm
Top Tube Slope	9.1deg	8.6deg -0.5deg
Head Tube Angle	72.1deg	72.1deg +0deg
Seat Tube Angle	74.5deg	74.6deg +0.1deg
Head Tube Length	97mm	100mm +3mm
Bottom Bracket Drop	75mm	70mm -5mm
Bottom Bracket Height	266mm	269mm +3mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	403.1mm	404mm +0.9mm
Front-Center	573.8mm	565.2mm -8.6mm
Front-Center Horizontal	568.9mm	560.8mm -8.1mm
Wheelbase	972mm	964.8mm -7.2mm
Fork Offset/Rake	49mm	45mm -4mm
Fork Length (Axle-To-Crown)	376mm	375mm -1mm
Trail	58.7mm mid/neutral	62.2mm +3.5mm mid/neutral
Mechanical Trail	55.8mm	59.2mm +3.4mm
Wheel Flop	17.2mm	18.2mm +1mm
Tire to Pedal Spindle	67.8mm 165 mm cranks	56.2mm -11.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 165 mm cranks	99mm -2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	28mm -2mm
Tire Width Max	34mm	32mm -2mm
Tire Outer Diameter	682mm	678mm -4mm
Bike Length with Tires	1654mm	1642.8mm -11.2mm
Crank Length	165mm	—
Handlebar Width	369mm	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc