2025 Trek Bikes FX Sport 4 M

Build

700C/29 in × 40 mm

Insights

Somewhat upright stack and reach vs trend of fitness bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
594mm
Reach
393mm
Stack to Reach Ratio
1.51:1
Seat Tube Length, C-T
457mm
Top Tube Length, Effective/Horizontal Center
563mm
Top Tube Slope
16.6deg
Head Tube Angle
71deg
Seat Tube Angle
74deg
Head Tube Length
165mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
286mm
Chainstay Length
442mm
Chainstay Length Horizontal
437.2mm
Front-Center
631.2mm
Front-Center Horizontal
627.8mm
Wheelbase
1065mm
Fork Offset/Rake
50mm
Trail
68mm
high
Mechanical Trail
64.3mm
Wheel Flop
20.9mm
Standover Height
787mm
Tire to Pedal Spindle Distance
With 170 mm cranks
110.2mm
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
1767mm
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
5 ft 5 in
to
5 ft 9 in
Source:https://www.trekbikes.com/us/en_US/bikes/hybrid-bikes/fitness-bikes/fx/fx-sport-4/p/47243/?colorCode=red_black