Compare: 2026 Argon 18 Nitrogen Base M vs 2024 Bigrock Aero Base 57

Insights

Average 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 Bigrock Aero

Stack	555mm	557mm +2mm
Reach	392mm	391mm -1mm
Stack to Reach Ratio	1.42:1	1.42:1
Seat Tube Length, C-TTT	505mm	500mm -5mm
Top Tube Length, Effective/Horizontal Center	557mm	—
Top Tube Length, Effective/Horizontal HT Top	—	557mm
Top Tube Slope	5.5deg	6.2deg +0.7deg
Head Tube Angle	72.7deg	72.8deg +0.1deg
Seat Tube Angle	73.5deg	73.4deg -0.1deg
Head Tube Length	138mm	148mm +10mm
Bottom Bracket Drop	79mm	72mm -7mm
Bottom Bracket Height	262mm	267mm +5mm
Chainstay Length	410mm	408mm -2mm
Chainstay Length Horizontal	402.3mm	401.6mm -0.7mm
Front-Center	593mm	590.6mm -2.4mm
Front-Center Horizontal	587.7mm	586.1mm -1.6mm
Wheelbase	990mm	987.7mm -2.3mm
Fork Offset/Rake	45mm	43mm -2mm
Fork Length (Axle-To-Crown)	376mm	—
Fork Length, Unknown	—	373mm
Trail	59.1mm mid/neutral	59.9mm +0.8mm mid/neutral
Mechanical Trail	56.4mm	57.3mm +0.9mm
Wheel Flop	16.8mm	16.9mm +0.1mm
Tire to Pedal Spindle	82mm 170 mm cranks	81.6mm -0.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	92mm 170 mm cranks	97mm +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	30mm -4mm
Tire Outer Diameter	682mm	678mm -4mm
Bike Length with Tires	1672mm	1665.7mm -6.3mm
Crank Length	170mm	—
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