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

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	645mm	653mm +8mm
Reach	409mm	422mm +13mm
Stack to Reach Ratio	1.58:1	1.55:1
Seat Tube Length, C-T	—	585mm
Seat Tube Length, Unknown	545mm	—
Top Tube Length, Effective/Horizontal HT Top	—	629mm
Top Tube Length, Effective/Horizontal Unknown	607mm	—
Top Tube Slope	12.3deg	9deg -3.3deg
Head Tube Angle	72deg	71deg -1deg
Seat Tube Angle	73deg	72.5deg -0.5deg
Head Tube Length	220mm	203mm -17mm
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	656mm	676mm +20mm
Front-Center Horizontal	651.9mm	671.7mm +19.8mm
Wheelbase	1070mm	1101mm +31mm
Fork Offset/Rake	55mm	48mm -7mm
Fork Length (Axle-To-Crown)	—	425mm
Fork Length, Unknown	395mm	—
Trail	56.9mm mid/neutral	73.5mm +16.6mm high
Mechanical Trail	54.1mm	69.5mm +15.4mm
Wheel Flop	16.7mm	22.6mm +5.9mm
Standover Height	—	863mm
Tire to Pedal Spindle	133mm 170 mm cranks	145mm +12mm 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	1776mm	1823mm +47mm
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