1989 Trek Bikes 400 series Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Rim brake
Very aggressive stack and reachvs category

Geometry

18"
Stack
440.5mm
Reach
391.6mm
Stack to Reach Ratio
1.12:1
Seat Tube Length, C-T
459mm
Top Tube Length, Effective/Horizontal Center
523mm
Top Tube Length, Actual C-C
523mm
Top Tube Slope
0deg
Head Tube Angle
72deg
Seat Tube Angle
73.5deg
Bottom Bracket Height
Chainstay Length
410mm
Wheelbase
971mm
Trail
Mechanical Trail
Wheel Flop

Base Build

18"
Wheel Size
700C/29 in
622 mm BSD
Tire Width
25mm
Tire Outer Diameter
672mm
Bike Length with Tires
1643mm

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
Endurance Road
Source:http://vintage-trek.com/images/trek/89Brochure/Trek89_Chrom.jpg