Trek FX Sport SL 5
Trek / Active & Fitness Bikes
Fitness, errands, and everything in between.
FX Sport SL 5 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. It has an upgraded high-quality drivetrain, hydraulic disc brakes, and tubeless-ready rims making it perfect for everything from solo workouts to speedy group rides.
Based on the bike's size chart. Your complimentary baseline fit in store dials in the rest.
Ship to store · free pickup, usually ready in 4–7 business days
Questions are welcome. No pressure, no bike jargon required.
The ride, not just the specs
FX is the bike we recommend for getting fit, running errands, and riding just because. It's light, comfortable, and easy to ride.
Whether it's a morning loop or a ride to the coffee shop, it makes it easy to get out the door.
What makes it special
A slightly shorter reach and taller stack put you in a more upright, balanced position for smooth power and all-day rideability.
Designed with 400 Series OCLV, the lightweight carbon frame keeps things fast and responsive, so you can accelerate quicker and handle with confidence.
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.
For the detail-oriented
Tap any group to see every part.
Measurements in cm unless noted.
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Rider height | 4'10"–5'1" | 5'1"–5'5" | 5'5"–5'9" | 5'9"–6'1" | 6'1"–6'6" |
| Seat tube (A on the drawing) | 35.6 | 40.6 | 45.7 | 50.8 | 55.9 |
| Seat tube angle (B on the drawing) | 75.0° | 74.5° | 74.0° | 73.5° | 72.5° |
| Head tube length (C on the drawing) | 11.5 | 14.0 | 16.5 | 19.0 | 21.5 |
| Head tube angle (D on the drawing) | 70.0° | 70.5° | 71.0° | 71.5° | 72.5° |
| Eff. top tube (E on the drawing) | 52.8 | 54.3 | 56.3 | 58.3 | 61.3 |
| BB height (F on the drawing) | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 |
| BB drop (G on the drawing) | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 |
| Chainstay length (H on the drawing) | 44.2 | 44.2 | 44.2 | 44.2 | 44.2 |
| Offset (I on the drawing) | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| Trail (J on the drawing) | 7.4 | 7.1 | 6.8 | 6.4 | 5.8 |
| Wheelbase (K on the drawing) | 104.7 | 105.4 | 106.5 | 107.5 | 108.2 |
| Standover (L on the drawing) | 70.8 | 75.1 | 78.7 | 81.2 | 84.8 |
| Reach (M on the drawing) | 38.3 | 38.5 | 39.3 | 40.0 | 41.0 |
| Stack (N on the drawing) | 54.3 | 56.8 | 59.4 | 62.0 | 64.8 |
| Wheel size | 700c | 700c | 700c | 700c | 700c |
The Atlanta Cycling difference
Specs matter. But so does how a bike feels when you ride it. Our team is here to help you choose the right size, understand the details, and get comfortable before your first ride.
When you buy from Atlanta Cycling, you're not just getting a box with a bicycle in it. You're getting a 30-day money-back guarantee, a complimentary baseline fit, lifetime basic adjustments, and real people who want you to love every mile.
Four neighborhood stores. One shared passion.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.
