2025 ASSISTING FORCE AF01 SSL 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, C-T	379mm	412mm	445mm	478mm	511mm	545mm
Seat Tube Length, C-TTT	420mm	450mm	480mm	500mm	520mm	—
Top Tube Length, Effective/Horizontal Center	511mm	522mm	539mm	556mm	573mm	—
Top Tube Length, Effective/Horizontal HT Top	529mm	542mm	561mm	573mm	593mm	607mm
Top Tube Slope	19.6deg	17.9deg	16.4deg	15.1deg	13.8deg	12.3deg
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	283mm	283mm	283mm	285mm	285mm	285mm
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 (Axle-To-Crown)	395mm	395mm	395mm	395mm	395mm	395mm
Trail	72.9mm high	69.5mm high	66.1mm high	66.1mm high	62.8mm mid/neutral	59.5mm mid/neutral
Mechanical Trail	68.5mm	65.5mm	62.5mm	62.5mm	59.6mm	56.6mm
Wheel Flop	23.4mm	21.9mm	20.4mm	20.4mm	18.9mm	17.5mm
Tire to Pedal Spindle	74mm 170 mm cranks	83mm 170 mm cranks	93mm 170 mm cranks	107mm 170 mm cranks	117mm 170 mm cranks	125mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	115mm 170 mm cranks	115mm 170 mm cranks	115mm 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	50mm	50mm	50mm	50mm	50mm	50mm
Tire Outer Diameter	722mm	722mm	722mm	722mm	722mm	722mm
Bike Length with Tires	1740mm	1749mm	1759mm	1774mm	1783mm	1792mm

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Progressive Gravel

Source:https://afbicycles.com/cdn/shop/files/10300_1.jpg?v=1755054149&width=2000

Suggest Bike Edit

2025 ASSISTING FORCE AF01 SSL Base

Geometry

Base Build

Stack and Reach vs. Category Trend