1987 Trek Bikes 560EX Base 25.5"
Build
700C/29 in × 20 mm
Stack and Reach vs. Category Trend
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Geometry
| Stack | 642.3mm |
| Reach | 394.4mm |
| Stack to Reach Ratio | 1.63:1 |
| Seat Tube Length, C-C | 635mm |
| Top Tube Length, Effective/Horizontal Center | 585mm |
| Top Tube Length, Actual C-C | 585mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.5deg |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 259mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 408.7mm |
| Front-Center | 613.5mm |
| Front-Center Horizontal | 609.3mm |
| Wheelbase | 1018mm |
| Fork Offset/Rake | 42mm |
| Trail | 57.3mm mid/neutral |
| Mechanical Trail | 54.8mm |
| Wheel Flop | 16mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 112.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 89mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 20mm |
| Tire Outer Diameter | 662mm |
| Bike Length with Tires | 1680mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://vintage-trek.com/images/trek/1987/87Trek21.jpg