1991 Trek Bikes 750 Base

	17	19	21	23
Stack	477.3mm	459.4mm	510.1mm	558.9mm
Reach	409.6mm	414.8mm	407mm	402.2mm
Stack to Reach Ratio	1.17:1	1.11:1	1.25:1	1.39:1
Seat Tube Length, C-T	430mm	480mm	533mm	584mm
Top Tube Length, Effective/Horizontal Center	557.2mm	556.3mm	563.9mm	574mm
Top Tube Length, Actual C-C	541mm	556.3mm	563.9mm	574mm
Top Tube Slope	7deg	0deg	0deg	0deg
Head Tube Angle	70.5deg	71.5deg	71.5deg	71.5deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Bottom Bracket Drop	40mm	40mm	40mm	40mm
Bottom Bracket Height	306mm	306mm	306mm	306mm
Chainstay Length	430mm	430mm	430mm	430mm
Chainstay Length Horizontal	428.1mm	428.1mm	428.1mm	428.1mm
Front-Center	614.6mm	612mm	614.6mm	627.2mm
Front-Center Horizontal	613.3mm	610.7mm	613.3mm	626mm
Wheelbase	1041.4mm	1038.9mm	1041.4mm	1054.1mm
Fork Offset/Rake	45.7mm	45.7mm	45.7mm	45.7mm
Trail	74mm high	67.6mm high	67.6mm high	67.6mm high
Mechanical Trail	69.8mm	64.1mm	64.1mm	64.1mm
Wheel Flop	23.3mm	20.3mm	20.3mm	20.3mm
Standover Height	726.4mm	767.1mm	807.7mm	856mm
Tire to Pedal Spindle	98.6mm 170 mm cranks	91mm 175 mm cranks	93.6mm 175 mm cranks	106.2mm 175 mm cranks
Pedal Spindle to Ground Clearance	136mm 170 mm cranks	131mm 175 mm cranks	131mm 175 mm cranks	131mm 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:http://www.vintage-trek.com/trek-fisher-klein-lemond.htm

Geometry