1981 Trek Bikes 600 Base 21"

Build

700C/29 in × 25 mm

Insights

Very aggressive stack and reach vs trend of sport touring bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
501.6mm
Reach
405.6mm
Stack to Reach Ratio
1.24:1
Seat Tube Length, C-C
520mm
Top Tube Length, Effective/Horizontal Center
540mm
Top Tube Length, Actual C-C
540mm
Top Tube Slope
0deg
Head Tube Angle
73deg
Seat Tube Angle
73.5deg
Head Tube Length
78mm
Bottom Bracket Drop
72mm
Bottom Bracket Height
264mm
Chainstay Length
435mm
Chainstay Length Horizontal
429mm
Front-Center
588.4mm
Front-Center Horizontal
584mm
Wheelbase
1013mm
Fork Offset/Rake
45mm
Fork Length (On-Axis)
365mm
Trail
55.7mm
mid/​neutral
Mechanical Trail
53.2mm
Wheel Flop
15.6mm
Tire to Pedal Spindle Distance
With 170 mm cranks
82.4mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
94mm

Base Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
25mm
Tire Outer Diameter
672mm
Bike Length with Tires
1685mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Rim
Source:http://www.vintage-trek.com/TrekBrochure1981.htm