Compare: 2023 Ridley Bikes Kanzo A GRX400/600 XXS vs 2025 ASSISTING FORCE AF01 Base XS

Insights

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

Design deviates from other sizes of Ridley Bikes Kanzo A

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

Design deviates from other sizes of ASSISTING FORCE AF01

Stack	528mm	535mm +7mm
Reach	374mm	375mm +1mm
Stack to Reach Ratio	1.41:1	1.43:1
Seat Tube Length, C-T	450mm	—
Seat Tube Length, Unknown	—	379mm
Top Tube Length, Effective/Horizontal Unknown	515mm	529mm +14mm
Top Tube Length, Actual C-C	745mm	—
Top Tube Slope	10.8deg	19.6deg +8.8deg
Head Tube Angle	70deg	70deg +0deg
Seat Tube Angle	75deg	74deg -1deg
Head Tube Length	100mm	110mm +10mm
Bottom Bracket Drop	74mm	78mm +4mm
Bottom Bracket Height	275mm	275mm +0mm
Chainstay Length	430mm	425mm -5mm
Chainstay Length Horizontal	423.6mm	417.8mm -5.8mm
Front-Center	597mm	605mm +8mm
Front-Center Horizontal	592.4mm	600.2mm +7.8mm
Wheelbase	1016mm	1018mm +2mm
Fork Offset/Rake	50mm	55mm +5mm
Fork Length, Unknown	—	395mm
Trail	73.9mm high	70mm -3.9mm high
Mechanical Trail	69.4mm	65.7mm -3.7mm
Wheel Flop	23.7mm	22.5mm -1.2mm
Standover Height	754mm	—
Tire to Pedal Spindle	78mm 170 mm cranks	82mm +4mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	105mm +0mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	38mm	42mm +4mm
Tire Outer Diameter	698mm	706mm +8mm
Bike Length with Tires	1714mm	1724mm +10mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Aluminum	Carbon/Composite
Fork Material	Unknown	Carbon/Composite
Brake Type	Rim	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://www.ridley-bikes.com/en_INT/bikes/SBIXTARID677	https://afbicycles.com/
Brand	Ridley Bikes	ASSISTING FORCE
Bike	2023 Kanzo A GRX400/600	2025 AF01 Base
Size	XXS	XS
Category	All-road/Gravel	All-road/Gravel