2025 ASSISTING FORCE AF01 Base

	XS	S	M	L	XL	XXL
Stack	535mm	556mm	578mm	601mm	624mm	645mm
Reach	375mm	382mm	389mm	395mm	402mm	409mm
Stack to Reach Ratio	1.43:1	1.46:1	1.49:1	1.52:1	1.55:1	1.58:1
Seat Tube Length, Unknown	404mm	437mm	470mm	503mm	536mm	570mm
Top Tube Length, Effective/Horizontal Unknown	529mm	542mm	561mm	573mm	593mm	607mm
Top Tube Slope	16.8deg	15.1deg	13.7deg	12.5deg	11.3deg	9.9deg
Head Tube Angle	70deg	70.5deg	71deg	71deg	71.5deg	72deg
Seat Tube Angle	74deg	74deg	73.5deg	73.5deg	73deg	73deg
Head Tube Length	110mm	130mm	152mm	178mm	200mm	220mm
Bottom Bracket Drop	78mm	78mm	78mm	76mm	76mm	76mm
Bottom Bracket Height	275mm	275mm	275mm	277mm	277mm	277mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	417.8mm	417.8mm	417.8mm	418.2mm	418.2mm	418.2mm
Front-Center	605mm	614mm	624mm	638mm	648mm	656mm
Front-Center Horizontal	600.2mm	609.2mm	619.2mm	633.9mm	642.9mm	651.9mm
Wheelbase	1018mm	1027mm	1037mm	1052mm	1061mm	1070mm
Fork Offset/Rake	55mm	55mm	55mm	55mm	55mm	55mm
Fork Length, Unknown	395mm	395mm	395mm	395mm	395mm	395mm
Trail	70mm high	66.7mm high	63.4mm mid/neutral	63.4mm mid/neutral	60.1mm mid/neutral	56.9mm mid/neutral
Mechanical Trail	65.7mm	62.8mm	59.9mm	59.9mm	57mm	54.1mm
Wheel Flop	22.5mm	21mm	19.5mm	19.5mm	18.1mm	16.7mm
Tire to Pedal Spindle	82mm 170 mm cranks	91mm 170 mm cranks	101mm 170 mm cranks	115mm 170 mm cranks	125mm 170 mm cranks	133mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	105mm 170 mm cranks	105mm 170 mm cranks	107mm 170 mm cranks	107mm 170 mm cranks	107mm 170 mm cranks

	XS	S	M	L	XL	XXL
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	42mm	42mm	42mm	42mm	42mm	42mm
Tire Width Max	50mm	50mm	50mm	50mm	50mm	50mm
Tire Outer Diameter	706mm	706mm	706mm	706mm	706mm	706mm
Bike Length with Tires	1724mm	1733mm	1743mm	1758mm	1767mm	1776mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://afbicycles.com/

Geometry