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

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	486mm -22.4mm
Reach	372mm	370mm -2mm
Stack to Reach Ratio	1.37:1	1.31:1
Seat Tube Length, C-T	450mm	—
Seat Tube Length, C-TTT	—	395mm
Top Tube Length, Effective/Horizontal Center	512mm	502mm -10mm
Top Tube Slope	8.6deg	10.1deg +1.5deg
Head Tube Angle	72.1deg	71.2deg -0.9deg
Seat Tube Angle	74.6deg	75deg +0.4deg
Head Tube Length	100mm	81mm -19mm
Bottom Bracket Drop	70mm	71mm +1mm
Bottom Bracket Height	269mm	270mm +1mm
Chainstay Length	410mm	410mm +0mm
Chainstay Length Horizontal	404mm	403.8mm -0.2mm
Front-Center	565.2mm	567.7mm +2.5mm
Front-Center Horizontal	560.8mm	563.2mm +2.4mm
Wheelbase	964.8mm	967mm +2.2mm
Fork Offset/Rake	45mm	49mm +4mm
Fork Length (Axle-To-Crown)	375mm	376mm +1mm
Trail	62.2mm mid/neutral	64.3mm +2.1mm mid/neutral
Mechanical Trail	59.2mm	60.9mm +1.7mm
Wheel Flop	18.2mm	19.6mm +1.4mm
Tire to Pedal Spindle	56.2mm 170 mm cranks	61.7mm +5.5mm 165 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	105mm +6mm 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	1649mm +6.2mm
Crank Length	—	165mm
Handlebar Width	—	360mm
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