2018 Giant Bicycles Fathom 2

	S	M	L	XL
Stack	588mm	598mm	611mm	625mm
Reach	411mm	428mm	444mm	460mm
Stack to Reach Ratio	1.43:1	1.4:1	1.38:1	1.36:1
Seat Tube Length, C-T	390mm	445mm	480mm	530mm
Top Tube Length, Effective/Horizontal HT Top	585mm	605mm	625mm	645mm
Top Tube Slope	22.3deg	17.2deg	14.6deg	10.8deg
Head Tube Angle	67deg	67deg	67deg	67deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	110mm	125mm	140mm
Bottom Bracket Drop	45mm	45mm	45mm	45mm
Bottom Bracket Height	304.2mm	304.2mm	304.2mm	304.2mm
Chainstay Length	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	422.6mm	422.6mm	422.6mm	422.6mm
Front-Center	687.9mm	709.8mm	731.8mm	752.7mm
Front-Center Horizontal	686.4mm	708.4mm	730.4mm	751.4mm
Wheelbase	1109mm	1131mm	1153mm	1174mm
Fork Offset/Rake	42mm	42mm	42mm	42mm
Trail	102.6mm very high	102.6mm very high	102.6mm very high	102.6mm very high
Mechanical Trail	94.4mm	94.4mm	94.4mm	94.4mm
Wheel Flop	36.9mm	36.9mm	36.9mm	36.9mm
Standover Height	714mm	743mm	753mm	786mm
Tire to Pedal Spindle	168.7mm 170 mm cranks	185.7mm 175 mm cranks	207.6mm 175 mm cranks	228.6mm 175 mm cranks
Pedal Spindle to Ground Clearance	134.2mm 170 mm cranks	129.2mm 175 mm cranks	129.2mm 175 mm cranks	129.2mm 175 mm cranks

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://www.giant-bicycles.com/us/fathom-2-2018

Geometry