Compare: 2026 Argon 18 Nitrogen Base L vs 2021 Trifox Bike X18 Base 58

Insights

Average 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	580mm	581mm +1mm
Reach	400mm	405mm +5mm
Stack to Reach Ratio	1.45:1	1.43:1
Seat Tube Length, C-T	—	517mm
Seat Tube Length, C-TTT	550mm	—
Top Tube Length, Effective/Horizontal Center	578mm	577mm -1mm
Top Tube Slope	3.5deg	8.8deg +5.3deg
Head Tube Angle	72.7deg	73.5deg +0.8deg
Seat Tube Angle	73deg	73.5deg +0.5deg
Head Tube Length	165mm	178mm +13mm
Bottom Bracket Drop	79mm	72mm -7mm
Bottom Bracket Height	262mm	267mm +5mm
Chainstay Length	410mm	415mm +5mm
Chainstay Length Horizontal	402.3mm	408.7mm +6.4mm
Front-Center	608.8mm	606mm -2.8mm
Front-Center Horizontal	603.7mm	602.3mm -1.4mm
Wheelbase	1006mm	1011mm +5mm
Fork Offset/Rake	45mm	47mm +2mm
Fork Length (Axle-To-Crown)	376mm	—
Fork Length, Unknown	—	366mm
Trail	59.1mm mid/neutral	51.4mm -7.7mm mid/neutral
Mechanical Trail	56.4mm	49.3mm -7.1mm
Wheel Flop	16.8mm	14mm -2.8mm
Tire to Pedal Spindle	95.3mm 172.5 mm cranks	97mm +1.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	89.5mm 172.5 mm cranks	97mm +7.5mm 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	1688mm	1689mm +1mm
Crank Length	172.5mm	—
Handlebar Width	380mm	—
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