Compare: 2026 Argon 18 Dark Matter 3D High Stack XXS vs 2025 ASSISTING FORCE AF01 Base XS

Insights

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

Design deviates from other sizes of Argon 18 Dark Matter

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

Design deviates from other sizes of ASSISTING FORCE AF01

Stack	543mm	535mm -8mm
Reach	361mm	375mm +14mm
Stack to Reach Ratio	1.5:1	1.43:1
Seat Tube Length, C-T	420mm	—
Seat Tube Length, Unknown	—	379mm
Top Tube Length, Effective/Horizontal HT Top	507mm	—
Top Tube Length, Effective/Horizontal Unknown	—	529mm
Top Tube Slope	16.3deg	19.6deg +3.3deg
Head Tube Angle	68.5deg	70deg +1.5deg
Seat Tube Angle	75.5deg	74deg -1.5deg
Head Tube Length	95mm	110mm +15mm
Bottom Bracket Drop	80mm	78mm -2mm
Bottom Bracket Height	281mm	275mm -6mm
Chainstay Length	436mm	425mm -11mm
Chainstay Length Horizontal	428.6mm	417.8mm -10.8mm
Front-Center	606.7mm	605mm -1.7mm
Front-Center Horizontal	601.4mm	600.2mm -1.2mm
Wheelbase	1030mm	1018mm -12mm
Fork Offset/Rake	54mm	55mm +1mm
Fork Length (Axle-To-Crown)	425mm	—
Fork Length, Unknown	—	395mm
Trail	84.2mm very high	70mm -14.2mm high
Mechanical Trail	78.3mm	65.7mm -12.6mm
Wheel Flop	28.7mm	22.5mm -6.2mm
Standover Height	713mm	—
Tire to Pedal Spindle	75.7mm 170 mm cranks	82mm +6.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	105mm -6mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	50mm	42mm -8mm
Tire Width Max	57mm	50mm -7mm
Tire Outer Diameter	722mm	706mm -16mm
Bike Length with Tires	1752mm	1724mm -28mm
Suspension Type	Rigid, 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