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

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	542mm	556mm +14mm
Reach	377mm	382mm +5mm
Stack to Reach Ratio	1.44:1	1.46:1
Seat Tube Length, C-T	480mm	—
Seat Tube Length, Unknown	—	412mm
Top Tube Length, Effective/Horizontal Unknown	525mm	542mm +17mm
Top Tube Length, Actual C-C	775mm	—
Top Tube Slope	8.9deg	17.9deg +9deg
Head Tube Angle	70.5deg	70.5deg +0deg
Seat Tube Angle	74.7deg	74deg -0.7deg
Head Tube Length	113mm	130mm +17mm
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	600mm	614mm +14mm
Front-Center Horizontal	595.4mm	609.2mm +13.8mm
Wheelbase	1019mm	1027mm +8mm
Fork Offset/Rake	49.7mm	55mm +5.3mm
Fork Length, Unknown	—	395mm
Trail	70.9mm high	66.7mm -4.2mm high
Mechanical Trail	66.8mm	62.8mm -4mm
Wheel Flop	22.3mm	21mm -1.3mm
Standover Height	776mm	—
Tire to Pedal Spindle	81mm 170 mm cranks	91mm +10mm 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	1717mm	1733mm +16mm
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	XS	S
Category	All-road/Gravel	All-road/Gravel