Compare: 2026 XMCS Aero Gravel Base L vs 2026 Argon 18 Anti Matter Base L

Insights

Somewhat upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of XMCS Aero Gravel

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

Design deviates from other sizes of Argon 18 Anti Matter

Stack	588mm	580mm -8mm
Reach	406mm	400mm -6mm
Stack to Reach Ratio	1.45:1	1.45:1
Seat Tube Length, C-T	—	550mm
Seat Tube Length, Unknown	530mm	—
Top Tube Length, Effective/Horizontal HT Top	—	578mm
Top Tube Length, Effective/Horizontal Unknown	575mm	—
Top Tube Slope	8.1deg	5.5deg -2.6deg
Head Tube Angle	71.2deg	71.1deg -0.1deg
Seat Tube Angle	74deg	73deg -1deg
Head Tube Length	156mm	150mm -6mm
Bottom Bracket Drop	80mm	76mm -4mm
Bottom Bracket Height	288mm	280mm -8mm
Chainstay Length	425mm	425mm +0mm
Chainstay Length Horizontal	417.4mm	418.2mm +0.8mm
Front-Center	645mm	625.5mm -19.5mm
Front-Center Horizontal	637.6mm	620.9mm -16.7mm
Wheelbase	1055mm	1039mm -16mm
Fork Offset/Rake	55mm	51mm -4mm
Fork Length (Axle-To-Crown)	—	400mm
Fork Length, Unknown	400mm	—
Trail	67.2mm high	68mm +0.8mm high
Mechanical Trail	63.6mm	64.3mm +0.7mm
Wheel Flop	20.5mm	20.8mm +0.3mm
Standover Height	—	828mm
Tire to Pedal Spindle	107mm 170 mm cranks	99.5mm -7.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	118mm 170 mm cranks	110mm -8mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	57mm	45mm -12mm
Tire Width Max	57mm	55mm -2mm
Tire Outer Diameter	736mm	712mm -24mm
Bike Length with Tires	1791mm	1751mm -40mm
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