1998 Trek Bikes UAV Base

	15"	17.5"	20.5"	23"	25"
Stack	579.4mm	581.3mm	594.5mm	598.4mm	600.9mm
Reach	376.7mm	382.1mm	382.5mm	399.7mm	412.3mm
Stack to Reach Ratio	1.54:1	1.52:1	1.55:1	1.5:1	1.46:1
Seat Tube Length, Unknown	381mm	444.5mm	520.7mm	584.2mm	635mm
Top Tube Length, Effective/Horizontal Center	545mm	550mm	564mm	582mm	592mm
Head Tube Angle	70deg	70.5deg	70.5deg	71.5deg	71.5deg
Seat Tube Angle	74deg	74deg	73deg	73deg	72.5deg
Head Tube Length	93mm	93mm	107mm	107mm	107mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm	68mm
Bottom Bracket Height	281mm	281mm	281mm	281mm	281mm
Chainstay Length	445mm	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	439.8mm	439.8mm	439.8mm	439.8mm	439.8mm
Front-Center	607.1mm	608mm	613mm	621mm	625.9mm
Front-Center Horizontal	603.2mm	604.2mm	609.2mm	617.2mm	622.2mm
Wheelbase	1043mm	1044mm	1049mm	1057mm	1062mm
Fork Offset/Rake	38mm	38mm	38mm	38mm	30mm
Fork Length (On-Axis)	445mm	445mm	445mm	445mm	445mm
Trail	86.6mm very high	83.3mm very high	83.3mm very high	76.7mm high	85.1mm very high
Mechanical Trail	81.4mm	78.5mm	78.5mm	72.7mm	80.7mm
Wheel Flop	27.8mm	26.2mm	26.2mm	23.1mm	25.6mm
Standover Height	690mm	723mm	774mm	822mm	869mm
Tire to Pedal Spindle	88.1mm 170 mm cranks	89mm 170 mm cranks	94mm 170 mm cranks	102mm 170 mm cranks	106.9mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 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://vintage-trek.com/Trek-Fisher-Klein-Lemond/1998trek.pdf

Geometry