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

Insights

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

Design deviates from other sizes of ASSISTING FORCE AF01

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

Design deviates from other sizes of Argon 18 Dark Matter

Stack	601mm	606mm +5mm
Reach	395mm	398mm +3mm
Stack to Reach Ratio	1.52:1	1.52:1
Seat Tube Length, C-T	—	495mm
Seat Tube Length, Unknown	478mm	—
Top Tube Length, Effective/Horizontal HT Top	—	577mm
Top Tube Length, Effective/Horizontal Unknown	573mm	—
Top Tube Slope	15.1deg	13.7deg -1.4deg
Head Tube Angle	71deg	71deg +0deg
Seat Tube Angle	73.5deg	73.7deg +0.2deg
Head Tube Length	178mm	151mm -27mm
Bottom Bracket Drop	76mm	78mm +2mm
Bottom Bracket Height	277mm	283mm +6mm
Chainstay Length	425mm	436mm +11mm
Chainstay Length Horizontal	418.2mm	429mm +10.8mm
Front-Center	638mm	634.8mm -3.2mm
Front-Center Horizontal	633.9mm	630mm -3.9mm
Wheelbase	1052mm	1059mm +7mm
Fork Offset/Rake	55mm	48mm -7mm
Fork Length (Axle-To-Crown)	—	425mm
Fork Length, Unknown	395mm	—
Trail	63.4mm mid/neutral	73.5mm +10.1mm high
Mechanical Trail	59.9mm	69.5mm +9.6mm
Wheel Flop	19.5mm	22.6mm +3.1mm
Standover Height	—	786mm
Tire to Pedal Spindle	115mm 170 mm cranks	103.8mm -11.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	107mm 170 mm cranks	113mm +6mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	50mm +8mm
Tire Width Max	50mm	57mm +7mm
Tire Outer Diameter	706mm	722mm +16mm
Bike Length with Tires	1758mm	1781mm +23mm
Suspension Type	Rigid, non-suspension corrected	Rigid, suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc