1985 Trek Bikes 400 series Base

Design
Drop Bar, Rigid, non-suspension corrected
Somewhat upright stack and reachvs category

Geometry

Large
Stack
604.9mm
Reach
395.5mm
Stack to Reach Ratio
1.53:1
Seat Tube Length, C-C
596mm
Top Tube Length, Effective/Horizontal Center
575mm
Top Tube Length, Actual C-C
575mm
Top Tube Slope
0deg
Head Tube Angle
73deg
Seat Tube Angle
73.5deg
Head Tube Length
184mm
Bottom Bracket Drop
72mm
Bottom Bracket Height
260mm
Chainstay Length
425mm
Chainstay Length Horizontal
418.9mm
Front-Center
619.3mm
Front-Center Horizontal
615.1mm
Wheelbase
1034mm
Fork Offset/Rake
45mm
Trail
54.5mm
mid/​neutral
Mechanical Trail
52.1mm
Wheel Flop
15.2mm
Tire to Pedal Spindle
117.3mm
170 mm cranks
Pedal Spindle to Ground Clearance
90mm
170 mm cranks

Base Build

Large
Wheel Size
700C/29 in
622 mm BSD
Tire Width
21mm
Tire Outer Diameter
664mm
Bike Length with Tires
1698mm

Stack and Reach vs. Category Trend

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
Performance Road
Source:vintage-trek.com