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

Insights

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

Design deviates from other sizes of ASSISTING FORCE AF01

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

Design deviates from other sizes of Argon 18 Dark Matter

Stack	624mm	627mm +3mm
Reach	402mm	410mm +8mm
Stack to Reach Ratio	1.55:1	1.53:1
Seat Tube Length, C-T	—	540mm
Seat Tube Length, Unknown	511mm	—
Top Tube Length, Effective/Horizontal HT Top	—	602mm
Top Tube Length, Effective/Horizontal Unknown	593mm	—
Top Tube Slope	13.8deg	11deg -2.8deg
Head Tube Angle	71.5deg	71deg -0.5deg
Seat Tube Angle	73deg	73.1deg +0.1deg
Head Tube Length	200mm	176mm -24mm
Bottom Bracket Drop	76mm	76mm +0mm
Bottom Bracket Height	277mm	285mm +8mm
Chainstay Length	425mm	436mm +11mm
Chainstay Length Horizontal	418.2mm	429.3mm +11.1mm
Front-Center	648mm	655.1mm +7.1mm
Front-Center Horizontal	642.9mm	650.7mm +7.8mm
Wheelbase	1061mm	1080mm +19mm
Fork Offset/Rake	55mm	48mm -7mm
Fork Length (Axle-To-Crown)	—	425mm
Fork Length, Unknown	395mm	—
Trail	60.1mm mid/neutral	73.5mm +13.4mm high
Mechanical Trail	57mm	69.5mm +12.5mm
Wheel Flop	18.1mm	22.6mm +4.5mm
Standover Height	—	825mm
Tire to Pedal Spindle	125mm 170 mm cranks	124.1mm -0.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	107mm 170 mm cranks	115mm +8mm 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	1767mm	1802mm +35mm
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