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

Insights

Average stack and reach vs trend of performance road bikes

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

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Nitrogen

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

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	30mm +2mm
Tire Width Max	32mm	34mm +2mm
Tire Outer Diameter	678mm	682mm +4mm
Bike Length with Tires	1642.8mm	1654mm +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