2012 Specialized Bicycles Source Base

	SM	MD	LG	XL
Seat Tube Length, C-T	440mm	485mm	530mm	570mm
Top Tube Length, Effective/Horizontal Unknown	570mm	580mm	600mm	620mm
Head Tube Angle	71deg	71.5deg	72deg	72deg
Seat Tube Angle	73.25deg	73.5deg	73deg	73deg
Head Tube Length	150mm	165mm	190mm	225mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	271mm	271mm	271mm	271mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	439.5mm	439.5mm	439.5mm	439.5mm
Front-Center	629mm	637mm	647mm	667mm
Front-Center Horizontal	625.5mm	633.5mm	642.5mm	663.5mm
Wheelbase	1065mm	1073mm	1082mm	1103mm
Fork Offset/Rake	51mm	51mm	51mm	51mm
Trail	63.5mm mid/neutral	60.3mm mid/neutral	57.2mm mid/neutral	57.2mm mid/neutral
Mechanical Trail	60mm	57.2mm	54.4mm	54.4mm
Wheel Flop	19.5mm	18.2mm	16.8mm	16.8mm
Standover Height	750mm	786mm	821mm	859mm
Tire to Pedal Spindle	118mm 170 mm cranks	121mm 175 mm cranks	131mm 175 mm cranks	151mm 175 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	96mm 175 mm cranks	96mm 175 mm cranks	96mm 175 mm cranks

Published Sizing Recommendations

Height	—	—	175 cm to 190 cm	—
PBH	—	—	80 cm to 95 cm	—

Source:https://www.specialized.com/de/en/source-expert-disc/p/36235?color=80585-36235