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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
trek fx gravel bike Trek fx sport 4 – Cahaba CyclesFX 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. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high performance bike perfect for everything from solo workouts to speedy group rides. The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter You get the superior ride quality of carbon
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. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
- You get the superior ride quality of carbon without the bank-breaking price
- On your left, roadie! This fitness bike is more than capable of taking on speedy group road rides
- Its easy to accessorize with fenders, lights, and more!
Make it your own
Customize your bike with fenders, racks, bottle cages, and more to make it your own.
1x drivetrain
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.
Just-right geometry
The all-new FX Sport has slightly less reach and slightly more stack than previous models for a more comfortable yet active and fast riding position.
400 Series OCLV
Ultra high performance, within reach. The areal weight range and modulus mix of 400 Series OCLV provides an exhilarating sense of acceleration and confident handling.
Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.
| Fork | Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew |
| Wheel Front | / |
| Tire | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40mm |
| Hub Front | Formula CL-51 alloy, 100x5mm QR |
| Hub Rear | Formula CL-52 alloy, 135x5mm QR |
| Rim | Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve |
| Skewer Front | 135x5mm bolt-on |
| Skewer Rear | 169x5mm bolt-on |
| Shifter | Shimano Deore M4100, 10 speed |
| Rear Derailleur | Shimano Deore M5120, long cage |
| Crank | Prowheel alloy, 42T narrow-wide ring, 170mm length |
| Cassette | Shimano Deore M4100, 11-46, 10 speed |
| Chain | KMC X10, 10 speed |
| Pedal | Bontrager City pedals |
| Saddle | Bontrager H1 |
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 330mm length |
| Handlebar | Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width |
| Stem | Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic // |
Geometry Chart
| B B Drop | 6.5 |
| B B Height | 28.5 |
| Chainstay Length | 44.2 |
| Eff Top Tube | 52.8 |
| Frame Reach | 38.3 |
| Frame Size Letter | XS |
| Frame Stack | 54.3 |
| Head Angle | 70.0° |
| Head Tube Length | 11.5 |
| Offset | 5 |
| Seat Tube | 35.6 |
| Seat Tube Angle | 75.0° |
| Standover | 70.8 |
| Trail | 7.4 |
| Wheelbase | 104.7 |
| Wheel Size | 700c |
| B B Drop | 6.5 |
| B B Height | 28.5 |
| Chainstay Length | 44.2 |
| Eff Top Tube | 54.3 |
| Frame Reach | 38.5 |
| Frame Size Letter | S |
| Frame Stack | 56.8 |
| Head Angle | 70.5° |
| Head Tube Length | 14 |
| Offset | 5 |
| Seat Tube | 40.6 |
| Seat Tube Angle | 74.5° |
| Standover | 75.1 |
| Trail | 7.1 |
| Wheelbase | 105.4 |
| Wheel Size | 700c |
| B B Drop | 6.5 |
| B B Height | 28.5 |
| Chainstay Length | 44.2 |
| Eff Top Tube | 56.3 |
| Frame Reach | 39.3 |
| Frame Size Letter | M |
| Frame Stack | 59.4 |
| Head Angle | 71.0° |
| Head Tube Length | 16.5 |
| Offset | 5 |
| Seat Tube | 45.7 |
| Seat Tube Angle | 74.0° |
| Standover | 78.7 |
| Trail | 6.8 |
| Wheelbase | 106.5 |
| Wheel Size | 700c |
| B B Drop | 6.5 |
| B B Height | 28.5 |
| Chainstay Length | 44.2 |
| Eff Top Tube | 58.3 |
| Frame Reach | 40 |
| Frame Size Letter | L |
| Frame Stack | 62 |
| Head Angle | 71.5° |
| Head Tube Length | 19 |
| Offset | 5 |
| Seat Tube | 50.8 |
| Seat Tube Angle | 73.5° |
| Standover | 81.2 |
| Trail | 6.4 |
| Wheelbase | 107.5 |
| Wheel Size | 700c |
| B B Drop | 6.5 |
| B B Height | 28.5 |
| Chainstay Length | 44.2 |
| Eff Top Tube | 61.3 |
| Frame Reach | 41 |
| Frame Size Letter | XL |
| Frame Stack | 64.8 |
| Head Angle | 72.5° |
| Head Tube Length | 21.5 |
| Offset | 5 |
| Seat Tube | 55.9 |
| Seat Tube Angle | 72.5° |
| Standover | 84.8 |
| Trail | 5.8 |
| Wheelbase | 108.2 |
| Wheel Size | 700c |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 874 reviews
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Product Reviews
★★★★★ 5
Durability
Style: Ball, Size: Medium (Pack of 2)
My dog loves these balls!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing.
He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
★★★★★ 5
My dog loves it!
Style: Ball, Size: Medium (Pack of 1)
This crunch ball was a Christmas gift for my 65lbs fur baby. It’s now mid April and he still loves it. He loves running after it and chomping down on it. It is still in good shape despite all the chomping it’s gotta . I highly recommend. He goes back to this toy agin and again! Great buy.
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Reviewed in the United States on April 15, 2026