Compare: 2026 Argon 18 Anti Matter Base L vs 2025 Serk Titanium A40 Base L

Insights

Somewhat aggressive stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Argon 18 Anti Matter

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Serk Titanium A40

Stack	580mm	590mm +10mm
Reach	400mm	390mm -10mm
Stack to Reach Ratio	1.45:1	1.51:1
Seat Tube Length, C-T	550mm	—
Seat Tube Length, Unknown	—	535mm
Top Tube Length, Effective/Horizontal HT Top	578mm	—
Top Tube Length, Effective/Horizontal Unknown	—	565mm
Top Tube Slope	5.5deg	8.1deg +2.6deg
Head Tube Angle	71.1deg	71.5deg +0.4deg
Seat Tube Angle	73deg	73.5deg +0.5deg
Head Tube Length	150mm	168mm +18mm
Bottom Bracket Drop	76mm	73mm -3mm
Bottom Bracket Height	280mm	278mm -2mm
Chainstay Length	425mm	420mm -5mm
Chainstay Length Horizontal	418.2mm	413.6mm -4.6mm
Front-Center	625.5mm	616.7mm -8.8mm
Front-Center Horizontal	620.9mm	612.4mm -8.5mm
Wheelbase	1039mm	1026mm -13mm
Fork Offset/Rake	51mm	47mm -4mm
Fork Length (Axle-To-Crown)	400mm	—
Trail	68mm high	67.9mm -0.1mm high
Mechanical Trail	64.3mm	64.4mm +0.1mm
Wheel Flop	20.8mm	20.4mm -0.4mm
Standover Height	828mm	808mm -20mm
Tire to Pedal Spindle	99.5mm 170 mm cranks	95.7mm -3.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	110mm 170 mm cranks	108mm -2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	45mm	40mm -5mm
Tire Width Max	55mm	—
Tire Outer Diameter	712mm	702mm -10mm
Bike Length with Tires	1751mm	1728mm -23mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Titanium
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Unknown