SKU: 98855141046
trek fx gravel bike

trek fx gravel bike Trek FX Sport 4

Sale price$18.77 Regular price$20.86
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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

trek fx gravel bike Trek FX Sport 4Trek FX Sport 4 Crystal White Supernova Experience Speed, Comfort, and Control The Trek FX Sport 4 in Lithium Grey is the ultimate carbon fiber fitness bike designed for riders seeking the agility of a lightweight road bike paired with the comfort and handling of a flat handlebar. With its 1x drivetrain and high performance components, this bike excels in solo workouts and spirited group rides alike. Key Features: Carbon Fiber Frame: Crafted from 400

Trek FX Sport 4 - Crystal White / Supernova

Experience Speed, Comfort, and Control

The Trek FX Sport 4 in Lithium Grey is the ultimate carbon fiber fitness bike designed for riders seeking the agility of a lightweight road bike paired with the comfort and handling of a flat handlebar. With its 1x drivetrain and high-performance components, this bike excels in solo workouts and spirited group rides alike.

Key Features:

  1. Carbon Fiber Frame: Crafted from 400 Series OCLV Carbon, the frame and fork offer a perfect balance of stiffness, compliance, and lightweight construction, ensuring a smooth and responsive ride experience.

  2. 1x Drivetrain: The Shimano CUES 10-speed drivetrain simplifies shifting while providing a wide range of gearing options, delivering optimal performance on varied terrain.

  3. Hydraulic Disc Brakes: Shimano hydraulic disc brakes offer reliable stopping power in all weather conditions, providing safety and control during fast descents and sudden stops.

  4. Tubeless Ready Wheels: Lightweight and durable tubeless-ready wheels combined with Bontrager GR1 Expert gravel tires ensure fast-rolling efficiency and enhanced traction on different surfaces.

  5. Comfortable Ergonomics: Equipped with vibration-absorbing handlebars and ergonomic grips, the FX Sport 4 ensures a comfortable and fatigue-free riding experience, even on longer rides.

Why Choose the FX Sport 4:

  • Versatile performance for both solo workouts and group rides, thanks to its lightweight carbon construction and responsive handling.
  • Simplified shifting with the 1x drivetrain, offering a wide range of gears with the convenience of a single shifter.
  • Exceptional value for a carbon fiber fitness bike, providing superior ride quality without the premium price tag.

Why You'll Love It:

  • Enjoy the simplicity and efficiency of a 1x drivetrain, offering a wide range of gearing options with minimal maintenance.
  • Experience the smooth and responsive ride quality of carbon fiber, enhancing your comfort and performance on every ride.
  • Conquer fast-paced group rides with confidence, knowing that the FX Sport 4 is capable of keeping up with the pack.
  • Customize your ride with ease, thanks to the bike's compatibility with a wide range of accessories including mudguards, lights, and more.

Elevate your fitness journey with the Trek FX Sport 4 - Lithium Grey, and discover the perfect blend of speed, comfort, and control for your riding adventures.

 

Specification

Trek FX Sport 4 Specification

FRAMESET
Frame with Fork 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat mount disc, 135x5 mm ThruSkew
Fork Carbon, hidden mudguard mounts, flat mount disc, 100x5 mm thru-skew

 

WEIGHT
Weight M - 10.46 kg / 23.07 lbs
Weight Limit
This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 136 kg (300 lb)

 

DRIVETRAIN
Shifter  Shimano CUES U6000 w/ optical gear display, 10-speed
Rear Derailleur Shimano CUES U6000 GS
Crank ProWheel alloy, 42T narrow-wide ring, 175 mm length
Cassette Shimano CUES LG300, LINGGLIDE, 11-48, 10-speed
Chain Shimano LG500
Pedal Bontrager City Pedals

 

WHEELS
Hub Front Formula CL-51 alloy, 100x5 mm QR
Skewer Front
135x5 mm bolt-on
Hub Rear Formula CL-52 alloy, 135x5 mm QR
Skewer Rear 169x5 mm bolt-on
Rim Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta vavle
Spokes 14 g stainless steel, black
Tyre Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm

 

COMPONENTS
Saddle Bontrager H1
Seatpost Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length.
Handlebar

Size: XS, S
Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width

Size: M, L, XL
Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width

Grips Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Stem

Size: XS
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length

Size: S, M
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length

Size: L, XL
Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length

Brake

Shimano hydraulic disc, MT201 lever, UR300 calliper

Brake Rotor

Shimano RT10, CentreLock, 160 mm

 

Sizing

Trek FX Sport 4 Sizing

Size  Rider Height Inseam
XS 147 - 155 cm (4'10" - 5'1") 69 - 73 cm (27" - 29")
S 155 - 165 cm (5'1" - 5'5") 72 - 78 cm (28" - 31")
M 165 - 175 cm (5'5" - 5'9") 77 - 83 cm (30" - 33")
L 175 - 186 cm (5'9" - 6'1") 82 - 88 cm (32" - 35")
XL 186 - 197 cm (6'1" - 6'6") 87 - 93 cm (34" - 37")

 

Geometry

Trek FX Sport 4 Geometry

All measurements are provided in cm unless otherwise stated.

Sizing Table

Frame Size Letter XS S M L XL
Wheel Size 700c 700c 700c 700c 700c
A - Seat Tube 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 11.5 14.0 16.5` 19.0 21.5
D - Head Angle 70.0°
70.5°
71.0°
71.5°
72.5°
E - Effective Top Tube 52.8 54.3 56.4 58.3 61.3
F - Bottom Bracket Height 28.5 28.5 28.5 28.5 28.5
G - Bottom Bracket Drop 6.5 6.5 6.5 6.5 6.5
H - Chainstay Length 44.2 44.2 44.2 44.2 V
I - Offset 5.0 5.0 5.0 5.0 5.0
J - Trail 7.4 7.1 6.8 6.4 5.8
K - Wheelbase
104.7 105.4 106.5 107.5 108.2
L - Standover 70.8 75.1 78.7 81.2 84.8
M - Frame Reach 38.3 38.5 39.3 40.0 41.0
N - Frame Stack 54.3 56.8 59.3 62.0 64.8

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98855141046

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4.6 ★★★★★
Based on 26 reviews
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M
Verified Purchase
michael underwood
Natrona Heights, US
★★★★★ 5
Quality filter at a great price.
Style: CA9401
Great filter, very similar to K&N at a way cheaper price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
S
Verified Purchase
scAmazon ShoPPer
Alexandria, US
★★★★★ 3
Fit perfectly, but questionably thin.
Style: CA11053A
This was an exact fit for my 2017 Kia Forte S. My only convern is that it is half the width of the stock filters. Hopefully the different material will make the difference over time. Didn't notice a loss or gain of torque or acceleration after swapping for my old dirty filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2025
C
Verified Purchase
Casey M
Houston, US
★★★★★ 5
Increased MPG!
Style: 33-3131
I don't know if it increases power, but it for sure has an increase of 1-2 MPG. About the same MPG increase as a K&N, but half the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
J
Verified Purchase
John K.
Carnegie, US
★★★★★ 4
Time will tell
Style: CA11053A
As another reviewer pointed out, the OEM paper filter is almost 3 times thicker than this one. All things equal, thicker would mean for filtering surface area. So with less filter media surface area, the filter would clog up quicker. However, since this is washable, maybe that's a moot point. I also noticed on my Hyundai Tucson, the rim of this filter must be slighter thicker because I had a tougher time clipping the filter box closed with this one installed. I am keeping my OEM for now, just in case.
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Reviewed in the United States on December 6, 2025
N
Verified Purchase
Nasir A.RAHMAN
Lowell, US
★★★★★ 5
PhilTop engine filter 1/2 the price of K&N filter No difference
Not much difference than K&N filter But 1/2 the price 100% identical
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026

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