1988 Trek Bikes 400 series Base 21”
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Trek Bikes 400 series
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 537.6mm |
| Reach | 384.8mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, C-C | 526mm |
| Top Tube Length, Effective/Horizontal Center | 545mm |
| Top Tube Length, Actual C-C | 545mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73.5deg |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 423.9mm |
| Front-Center | 589.5mm |
| Front-Center Horizontal | 585.1mm |
| Wheelbase | 1009mm |
| Fork Offset/Rake | 45mm |
| Trail | 61.9mm mid/neutral |
| Mechanical Trail | 58.8mm |
| Wheel Flop | 18.2mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 83.5mm |
| 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 | 1681mm |
| Crank Length | 170mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://www.vintage-trek.com/images/trek/Trek88_1.pdf