Compare: 2026 Argon 18 Nitrogen Base XXS vs 2021 Trifox Bike X18 Base 46

Insights

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Argon 18 Nitrogen

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of Trifox Bike X18

Stack	486mm	492mm +6mm
Reach	370mm	373mm +3mm
Stack to Reach Ratio	1.31:1	1.32:1
Seat Tube Length, C-T	—	440mm
Seat Tube Length, C-TTT	395mm	—
Top Tube Length, Effective/Horizontal Center	502mm	500mm -2mm
Top Tube Slope	10.1deg	7.8deg -2.3deg
Head Tube Angle	71.2deg	71deg -0.2deg
Seat Tube Angle	75deg	75.5deg +0.5deg
Head Tube Length	81mm	95mm +14mm
Bottom Bracket Drop	71mm	74mm +3mm
Bottom Bracket Height	270mm	265mm -5mm
Chainstay Length	410mm	415mm +5mm
Chainstay Length Horizontal	403.8mm	408.4mm +4.6mm
Front-Center	567.7mm	574mm +6.3mm
Front-Center Horizontal	563.2mm	569.7mm +6.5mm
Wheelbase	967mm	978mm +11mm
Fork Offset/Rake	49mm	47mm -2mm
Fork Length (Axle-To-Crown)	376mm	—
Fork Length, Unknown	—	366mm
Trail	64.3mm mid/neutral	67mm +2.7mm high
Mechanical Trail	60.9mm	63.4mm +2.5mm
Wheel Flop	19.6mm	20.6mm +1mm
Tire to Pedal Spindle	61.7mm 165 mm cranks	65mm +3.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 165 mm cranks	95mm -10mm 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	—
Tire Outer Diameter	682mm	678mm -4mm
Bike Length with Tires	1649mm	1656mm +7mm
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