1980 Trek Bikes 400 series Base 25.25in
Build
700C/29 in × 1.13 in
Insights
Somewhat aggressive stack and reach vs trend of sport touring bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 602mm |
| Reach | 416mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-C | 630mm |
| Top Tube Length, Effective/Horizontal Center | 600mm |
| Top Tube Length, Actual C-C | 600mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 78mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267.7mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 439.1mm |
| Front-Center | 639.9mm |
| Front-Center Horizontal | 635.9mm |
| Wheelbase | 1075mm |
| Fork Offset/Rake | 55mm |
| Fork Length (Axle-To-Crown) | 365mm |
| Trail | 46.3mm mid/neutral |
| Mechanical Trail | 44.3mm |
| Wheel Flop | 13mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 130.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 97.7mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 1.13in |
| Tire Outer Diameter | 679.4mm |
| Bike Length with Tires | 1754.4mm |
| 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/TrekBrochure1980.htm