1998 Trek Bikes UAV Base 25"
Build
700C/29 in × 38 mm
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Design deviates from other sizes of Trek Bikes UAV
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 600.9mm |
| Reach | 412.3mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, Unknown | 635mm |
| Top Tube Length, Effective/Horizontal Center | 592mm |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 107mm |
| Bottom Bracket Drop | 68mm |
| Bottom Bracket Height | 281mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 439.8mm |
| Front-Center | 625.9mm |
| Front-Center Horizontal | 622.2mm |
| Wheelbase | 1062mm |
| Fork Offset/Rake | 30mm |
| Fork Length (On-Axis) | 445mm |
| Trail | 85.1mm very high |
| Mechanical Trail | 80.7mm |
| Wheel Flop | 25.6mm |
| Standover Height | 869mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 106.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 111mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 38mm |
| Tire Outer Diameter | 698mm |
| Bike Length with Tires | 1760mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 48mm |
| Suspension Sag | 20% |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Rim |
Source:https://vintage-trek.com/Trek-Fisher-Klein-Lemond/1998trek.pdf