Compare: 2026 Argon 18 Anti Matter Base L vs 2026 BXT BXT-GRAVEL-055 Base 58

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 BXT BXT-GRAVEL-055

Stack	580mm	597.5mm +17.5mm
Reach	400mm	392mm -8mm
Stack to Reach Ratio	1.45:1	1.52:1
Seat Tube Length, C-T	550mm	566mm +16mm
Top Tube Length, Effective/Horizontal Center	—	576mm
Top Tube Length, Effective/Horizontal HT Top	578mm	—
Top Tube Slope	5.5deg	5.8deg +0.3deg
Head Tube Angle	71.1deg	71deg -0.1deg
Seat Tube Angle	73deg	72.9deg -0.1deg
Head Tube Length	150mm	177mm +27mm
Bottom Bracket Drop	76mm	69mm -7mm
Bottom Bracket Height	280mm	292mm +12mm
Chainstay Length	425mm	428mm +3mm
Chainstay Length Horizontal	418.2mm	422.4mm +4.2mm
Front-Center	625.5mm	636mm +10.5mm
Front-Center Horizontal	620.9mm	632.1mm +11.2mm
Wheelbase	1039mm	1054.5mm +15.5mm
Fork Offset/Rake	51mm	55mm +4mm
Fork Length (Axle-To-Crown)	400mm	—
Fork Length, Unknown	—	401mm
Trail	68mm high	66.1mm -1.9mm high
Mechanical Trail	64.3mm	62.5mm -1.8mm
Wheel Flop	20.8mm	20.4mm -0.4mm
Standover Height	828mm	861mm +33mm
Tire to Pedal Spindle	99.5mm 170 mm cranks	105mm +5.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	110mm 170 mm cranks	122mm +12mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	45mm	50mm +5mm
Tire Width Max	55mm	50mm -5mm
Tire Outer Diameter	712mm	722mm +10mm
Bike Length with Tires	1751mm	1776.5mm +25.5mm
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