1981 Trek Bikes 600 Base 25.5"
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 | 456.6mm |
| Stack to Reach Ratio | 1.1:1 |
| Seat Tube Length, C-C | 620mm |
| 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 | 73.5deg |
| Head Tube Length | 78mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 429mm |
| Front-Center | 639.1mm |
| Front-Center Horizontal | 635mm |
| Wheelbase | 1064mm |
| 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 | 133.1mm |
| 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 | 1736mm |
| 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