About The Trek FX Sport SL 6 City Bike

The FX Sport SL 6 is a high-performance carbon fiber fitness bike that combines road-bike speed with flat-bar control, built for fast workouts, spirited group rides, and quick everyday miles. It sits at the top of the FX Sport range with a wireless electronic drivetrain and carbon wheels for a light, refined ride.

The 400 Series OCLV Carbon frame and full carbon fork keep weight low, while a SRAM Apex XPLR eTap AXS wireless 12-speed drivetrain delivers crisp, low-maintenance electronic shifting. Bontrager Aeolus Elite 35 OCLV carbon tubeless-ready wheels and 700x40mm Bontrager GR1 Expert tires add speed, comfort, and light all-road capability.

Who It's For

  • Performance-minded fitness riders who want flat-bar speed and electronic shifting
  • Riders who value carbon wheels and a light, refined build
  • Those who ride fast group rides and want low-maintenance shifting
  • Not ideal for: riders wanting a fully equipped commuter or budget build

What to Look For

  • Drivetrain: SRAM Apex XPLR eTap AXS is wireless and electronic, with an 11-44 12-speed range
  • Wheels: the carbon Aeolus wheels are tubeless-ready and noticeably light
  • Charging: the AXS battery is removable and rechargeable, so plan to keep it charged

Key Features

Frame — 400 Series OCLV Carbon: A lightweight carbon frame with internal routing, fender mounts, flat-mount disc, and DuoTrap S compatibility for ride data.

Fork — carbon: A full carbon fork with hidden fender mounts and flat-mount disc that keeps the front end light and smooth.

Drivetrain — SRAM Apex XPLR eTap AXS 12-speed: A wireless electronic 1x drivetrain with an 11-44 cassette and 40T chainring for crisp, low-maintenance shifting.

Brakes — Shimano hydraulic disc: Shimano MT201 levers with UR300 calipers and 160mm rotors provide reliable, low-effort stopping in all conditions.

Rider Intent Summary

  • Biggest strengths: light carbon frame and wheels plus wireless electronic shifting for a fast, refined ride
  • Tradeoffs: the premium build comes at a higher price, and the AXS drivetrain needs battery charging
  • What makes it different: wireless electronic shifting and carbon wheels in a flat-bar fitness bike

Victory's Take

At Victory Bicycle Studio, we think the FX Sport SL 6 is for riders who want the fastest, most refined flat-bar fitness experience. We love how the wireless drivetrain and carbon wheels make quick rides feel effortless.

What you get

  • Frame - 400 Series OCLV Carbon
  • Fork - FX Sport SL carbon, flat-mount disc
  • Groupset - SRAM Apex XPLR eTap AXS 1x12
  • Brakes - Shimano Hydraulic Disc, 160mm
  • Tires - Bontrager GR1 Expert 700x40mm
FX Sport SL 6 XS Matte Bronze Age/Deep Smoke

Trek

Trek FX Sport SL 6 City Bike

Regular price $3,499.99 USD
Sale price $3,499.99 USD Regular price $3,499.99 USD

Specifications

Frameset
Frame

400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew

Fork

Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew

Wheels
Wheel front

Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 100x5mm QR

Wheel rear

Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, Shimano 11-speed freehub, 135x5mm skewer

Hub front

Bontrager Affinity, Tubeless Ready, centerlock, 100x5mm axle

Skewer front

135x5mm bolt-on

Hub rear

Bontrager Affinity Comp, Shimano 11/12-speed freehub, 142x5mm

Skewer rear

169x5mm bolt-on

Tire

Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40mm

Max tire size

42mm without fenders, 40mm with fenders

Drivetrain and Brakes
E-system

SRAM AXS battery pack (with charger)

Rear derailleur

SRAM Apex XPLR eTap AXS, 44T max cog

Crankset

SRAM Apex 1, 40T, DUB Wide

- Size XS, S: 170mm

- Size M, L, XL: 175mm

Bottom bracket

SRAM DUB, 86.5mm, PressFit

Cassette

SRAM XPLR PG-1231, 11-44, 12-speed

Chain

SRAM Apex, 12-speed

Pedals

Bontrager City

Max chainring size

1x: 44T

Brake

Shimano hydraulic disc, MT201 lever, UR300 caliper

Brake rotor

Shimano RT10, centerlock, 160mm

Max rotor size

160mm front & rear

Cockpit
Saddle

Bontrager Montrose Comp, steel rails, 138mm width

Seatpost

Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm

Handlebar

Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise

- Size XS, S, M: 600mm width

- Size L, XL: 660mm width

Grips

Bontrager Satellite IsoZone Plus, lock-on, ergonomic

Stem

Bontrager Elite, 31.8mm, Blendr compatible, 7 degree

- Size XS: 90mm

- Size S, M: 100mm

- Size L, XL: 110mm

Additional Information
Weight

M - 9.50 kg / 20.95 lbs

Weight limit

300 lbs (136 kg)

Frequently Asked Questions

How is the bike packaged and how long does delivery take?

All bikes are securely packaged to ensure that damage doesn't occur during shipping. All parts of the bike are padded and if needed, zip tied to minimize or eliminate movement inside the box. Once a bike is handed to the shipping company (usually Fedex or UPS), depending on your location, delivery will range from 1 day to 8 days. If you do choose the option for Professional Assembly or White Glove Delivery, this can add anywhere from 2 days to 5 days to the lead time.

Can I finance the purchase of my new bike?

Yes.  Simply select the Shop Pay Installments option which will allow you to buy now and pay later.  Shop Pay Installments is powered by Affirm.  If you would like to determine your spending limit, simply download the Shop app or the Affirm app on your smartphone and after you create an account on one of these apps, the app will let you know what is your spending limit.

Can I return the bike if it doesn't suit my needs?

Our return process is as follows. The customer is responsible for the return label ($150). Once the returned bike arrives at our warehouse, our team will inspect it and make sure it is in new condition and undamaged. Once we verify, we will process the return and issue a refund to the original payment method on file. To clarify the amount refunded, it would just be the amount of the bike (and tax if applicable) less the $150 shipping label that we provided, but the original shipping is not refunded. So if the original bike cost $4,500 and shipping was $150 (so you paid $4,650), you would be refunded $4,350 (the $4,500 less $150 for the return label) assuming the bike was returned in new and un-used condition and within the 30 day return period.

What does the warranty of my new bike or product cover and what is the warranty period?

Depending on the bike or any product, different companies have different warranty policies.  If you do ever have an issue with your bike or any product, simply email us at online@victorybicyclestudio.com and we will assist with any warranty issues and clarify the warranty for the affected product.

Can I have my bike serviced at any bike shop?

Typically, to avoid any issues with your warranty, you should bring your bike to a certified mechanic or bike store for that bike (i.e. if you have a Trek bicycle, you should bring the bike to be serviced to a local bike store that is an authorized Trek dealer).  If you need assistance, simply email us at online@victorybicyclestudio.com and we can direct you to a certified dealer of your bike.

Do you ship bikes internationally?

We unfortunately do not ship bikes outside of the 48 contiguous states of the United States. We do recommend for international customers to open (or use a current account) account with a freight forwarding company. If you use a freight forwarding company located in the U.S., make sure to put your billing address for a dedicated credit card as the same address as the freight forwarder so that you don't have any credit card or payment method issues).

Once you do this, simply place an order with us and we can ship to the U.S. address as long as the credit card doesn't get rejected. Once the freight forwarder has the box/order/shipment, you would instruct them to then ship to you in your home country and they would charge you their own shipping charge to ship to your international address.

Do you offer free shipping?

We do offer free shipping on non-bike orders over $100. We do not offer free shipping for bicycles unless it is a one time promotion. Generally, bike shipping will cost $150 and that covers just the shipping of the bike with no assembly. If you were to bring that bike to your local mechanic or bike store, you would pay them their assembly fee. If you choose our Professional Assembly option for $200, our service technicians would assemble the bike before shipping and then re-pack the bike safely for transit. When you receive the bike you would attach the front wheel, attach the seatpost/saddle, and raise the handlebars and clamp them. Those three items do have to be detached to minimize or eliminate the chance of damage in transit.

How much does shipping cost?

For orders of parts, accessories, apparel, etc. on orders under $100, shipping is a flat rate of $9.99. Regular bike shipping without assembly is $150, bike shipping with Professional Assembly is an additional $200 (so $350 in total which includes the $150 of regular shipping). Our White Glove Delivery option is $699 and that will cover the assembly of the bike and our White Glove Delivery partner delivering your dream bike to your front door, ready to ride!

How can I track my order?

When you place your online order, you will receive an instantaneous email update with your order number and order details, and shortly after, you will receive a follow up order email with the tracking number for your order.  If you still need assistance with your order, feel free to email us at online@victorybicyclestudio.com and we will respond asap.

What happens if my package arrives damaged?

If your package arrives damaged, email online@victorybicyclestudio.com with pictures of all angles of the box and pictures of the damaged product and we will work with you to either send a new replacement asap and coordinate return (or re-imburse you for labor or costs incurred to fix the issue at your local bike store).

Are pedals included with the bike?

If you do not see pedals in the bullet point product specs on the product page, the bike does not come equipped with pedals.  Many manufacturers do not spec bikes with pedals, so they are often purchased separately.

If I only pay the $150 for bike shipping, can I assemble the bike on my own?

Victory Bicycle Studio highly recommends that you bring your bike to your local certified bike store for the brand of the bike that you purchased. If you do attempt to assemble the bike and damage occurs, this may result in your warranty not being honored. For that reason, we do highly recommend to select our Professional Assembly option for $299.