2025 Trek Bikes Powerfly FS 4 Medium
Build
700C/29 in × 2.5 in
Insights
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 1597.7mm |
| Reach | 45mm |
| Stack to Reach Ratio | 35.5:1 |
| Seat Tube Length, C-T | 40mm |
| Top Tube Length, Effective/Horizontal Center | 59.5mm |
| Top Tube Slope | 87.9deg |
| Head Tube Angle | 66deg |
| Seat Tube Angle | 71.3deg |
| Head Tube Length | 11mm |
| Bottom Bracket Drop | 4.5mm |
| Bottom Bracket Height | 370mm |
| Chainstay Length | 46.1mm |
| Chainstay Length Horizontal | 45.9mm |
| Front-Center | 76.6mm |
| Front-Center Horizontal | 76.4mm |
| Wheelbase | 122.3mm |
| Fork Offset/Rake | 4.4mm |
| Trail | 161.9mm very high |
| Mechanical Trail | 147.9mm |
| Wheel Flop | 60.2mm |
| Standover Height | 78mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | -467.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 200mm |
4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 871.3mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Rear Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Unknown |
| Features | E-bike |
Source:https://www.trekbikes.com/gb/en_GB/bikes/mountain-bikes/electric-mountain-bikes/powerfly/powerfly-full-suspension/powerfly-fs-4-800wh-gen-4/p/57351/?colorCode=grey_black