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

Insights

Average 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	564mm	556mm -8mm
Reach	373mm	382mm +9mm
Stack to Reach Ratio	1.51:1	1.46:1
Seat Tube Length, C-T	435mm	—
Seat Tube Length, Unknown	—	412mm
Top Tube Length, Effective/Horizontal HT Top	530mm	—
Top Tube Length, Effective/Horizontal Unknown	—	542mm
Top Tube Slope	16.5deg	17.9deg +1.4deg
Head Tube Angle	70deg	70.5deg +0.5deg
Seat Tube Angle	74.9deg	74deg -0.9deg
Head Tube Length	112mm	130mm +18mm
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	612.7mm	614mm +1.3mm
Front-Center Horizontal	607.4mm	609.2mm +1.8mm
Wheelbase	1036mm	1027mm -9mm
Fork Offset/Rake	54mm	55mm +1mm
Fork Length (Axle-To-Crown)	425mm	—
Fork Length, Unknown	—	395mm
Trail	73.9mm high	66.7mm -7.2mm high
Mechanical Trail	69.5mm	62.8mm -6.7mm
Wheel Flop	23.8mm	21mm -2.8mm
Standover Height	729mm	—
Tire to Pedal Spindle	81.7mm 170 mm cranks	91mm +9.3mm 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	1758mm	1733mm -25mm
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