1985 Trek Bikes 400 series Base Large
Build
700C/29 in × 21 mm
Insights
Somewhat upright stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
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Geometry
| 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 Distance With 170 mm cranks | 117.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 90mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 21mm |
| Tire Outer Diameter | 664mm |
| Bike Length with Tires | 1698mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:vintage-trek.com