2025 Trek Bikes FX Sport 4 XS
Build
700C/29 in × 40 mm
Insights
Design deviates from other sizes of Trek Bikes FX Sport
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 543mm |
| Reach | 383mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 356mm |
| Top Tube Length, Effective/Horizontal Center | 528mm |
| Top Tube Slope | 22.7deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 286mm |
| Chainstay Length | 442mm |
| Chainstay Length Horizontal | 437.2mm |
| Front-Center | 613.3mm |
| Front-Center Horizontal | 609.8mm |
| Wheelbase | 1047mm |
| Fork Offset/Rake | 50mm |
| Trail | 74.5mm high |
| Mechanical Trail | 70.1mm |
| Wheel Flop | 24mm |
| Standover Height | 708mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 92.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 116mm |
4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1749mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 4 ft 10 in to 5 ft 1 in |
Source:https://www.trekbikes.com/us/en_US/bikes/hybrid-bikes/fitness-bikes/fx/fx-sport-4/p/47243/?colorCode=red_black