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Trek FX Sport 4

Trek FX Sport 4
  • Color: Dark Aquatic
  • Color: Lithium Grey
  • Color: Trek White
Color: Dark Aquatic
Size: Select size
Please select options Unavailable
In Store / Curbside Pickup Only. Bike Orders are typically ready in 2 – 5 days*. *Bikes may need to be built or transferred from another location. This may add extra processing time.


FX Sport 4 is a carbon fiber fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar.

This high-performance fitness bike is perfect for everything from solo workouts to speedy group rides.

Featuring a lightweight carbon frame and fork, the rock solid Shimano CUES 10-speed 1x drivetrain that delivers a wide range of gearing with the simplicity of a single shifter, hydraulic disc brakes that give you solid stopping power in any weather and wide Bontrager GR1 tubeless ready tires for added comfort on pavement and light gravel roads.

A 1x drivetrain means more versatility, simpler shifting and less things to go wrong. You still have a wide range of gears, but with lighter and more intuitive shifting. Everything you need and nothing more.

Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for siginificantly increased life on wear items like chain, cassette, and chainrings.

Wide all-terrain 40c gravel tires let you adventure beyond the beaten path with confidence.

All FX Sport models have mounts for a frame bag and a rear rack so you can carry gear, nutrition, groceries, and more. You can also add fenders to help keep you dry in all weather conditions.

Satellite IsoZone Grips reduce road chatter to help prevent fatigue and offer a smoother, more comfortable ride. The dual-density rubber compound and ergonomic design of this dual lock-on grip featuers IsoZone vibration damping to deliver all-purpose comfort that is suitable for both trail and city riding.

Geo Chart

Geometry Chart:
A — Seat tube (cm) 35.6 40.6 45.7 50.8 55.9
B — Seat tube angle 75.0° 74.5° 74.0° 73.5° 72.5°
C — Head tube length (cm) 11.5 14 16.5 19 21.5
D — Head angle 70.0° 70.5° 71.0° 71.5° 72.5°
E — Effective top tube (cm) 52.8 54.3 56.3 58.3 61.3
F — Bottom bracket height (cm) 28.5 28.5 28.5 28.5 28.5
G — Bottom bracket drop (cm) 6.5 6.5 6.5 6.5 6.5
H — Chainstay length (cm) 44.2 44.2 44.2 44.2 44.2
I — Offset (cm) 5 5 5 5 5
J — Trail (cm) 7.4 7.1 6.8 6.4 5.8
K — Wheelbase (cm) 104.7 105.4 106.5 107.5 108.2
L — Standover (cm) 70.8 75.1 78.7 81.2 84.8
M — Frame reach (cm) 38.3 38.5 39.3 40 41
N — Frame stack (cm) 54.3 56.8 59.4 62 64.8
SizeHeight (inches)Height (cm)
X-Small 4’10” - 5’1” 147 - 155cm
Small 5’1” - 5’5” 155 - 165cm
Medium 5’5” - 5'9" 165 - 175cm
Large 5’9” - 6'1" 175 - 186cm
X-Large 6’1” - 6'6" 187 - 197cm


Frame 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat-mount disc, 135x5 mm ThruSkew
Fork Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew
Rims/Wheels Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve
Hubs FRONT: Formula CL-51 alloy, 100x5mm QR / REAR: Formula CL-52 alloy, 135x5mm QR
Spokes 14g stainless steel, black
Tires Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40mm
Crankset Prowheel alloy, 42T narrow-wide ring, 175 mm length
Chain Shimano LG500
Rear Derailleur Shimano CUES U6000 GS
Shifters Shimano CUES U6000 w/optical gear display, 10 speed
Handlebars Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise,
Tape/Grips Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Stem Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree
Brakes Shimano hydraulic disc, MT201 lever, UR300 caliper
Pedals Bontrager City pedals
Saddle Bontrager H1
Seat Post Bontrager alloy, 27.2mm, 12mm offset, 330mm length

* Subject to change without notice.


FX Sport

Part Numbers

Option UPC MPN Store SKU
Dark Aquatic / Small 745889461916 5293171 BIK488570064
Dark Aquatic / Medium 745889462272 5293172 BIK482961034
Lithium Grey / Small 745889462012 5293166 BIK482953394
Lithium Grey / Large 745889462111 5293168 BIK482483884
Trek White / Medium 745889462296 5293177 BIK463637524