The FX Sport 6 is an ultra-light and fast fitness bike. It has every performance feature of a high-end road bike, with the added benefit of flat handlebars for additional comfort and control. A lightweight 400 Series OCLV Carbon frame, wireless electronic SRAM shifting and Bontrager carbon wheels make it the best choice for serious fitness riders with serious goals.
You want the fastest fitness bike you can get – one that can hold its own with any road bike out there. You want to keep up with faster group rides, put on more miles, set new Strava PRs and leave a pack of road riders in your dust as you sprint to the edge of the city.
A lightweight 400 Series OCLV Carbon frame with a carbon fork, a wireless electronic SRAM Apex XPLR AXS 12-speed drivetrain with a wide range of gearing, hydraulic disc brakes, hidden mudguard mounts, a lightweight Bontrager Aeolus Elite 35 carbon wheel set with high-quality tubeless-ready Bontrager GR1 Team Issue gravel tyres, and a vibration-absorbing handlebar with ergonomic grips.
The fastest fitness bike. Period. The FX Sport 6 delivers lightweight OCLV Carbon frame and fork, high-performance wireless drivetrain, and a light and responsive carbon wheel set to create the ideal ride for anyone who wants to ride ridiculously fast and crush fitness milestones.
Why you'll love it
Please note – spec applies to all sizes unless listed separately
FRAMESET
| Frame | 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 - 9.50 kg / 20.95 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
E-SYSTEM
| Battery | SRAM eTap battery pack (with charger) |
|---|
DRIVETRAIN
| Rear derailleur | SRAM Apex XPLR eTap AXS, 44T max cog |
|---|---|
| *Crank | Size: S SRAM Apex 1, 40T, DUB Wide, 170 mm length |
| Size: M, L SRAM Apex 1, 40T, DUB Wide, 175 mm length |
|
| Bottom bracket | SRAM DUB, 86.5 mm, PressFit |
| Cassette | SRAM XPLR PG-1231, 11-44, 12-speed |
| Chain | SRAM Apex, 12-speed |
| Pedal | Bontrager City Pedals |
| Max. chainring size | 1x: 44T |
WHEELS
| Wheel front | Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 100x5 mm QR |
|---|---|
| Wheel rear | Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, Shimano 11-speed freehub, 135x5mm skewer |
| Skewer front | 135x5 mm bolt-on |
| Skewer rear | 169x5 mm bolt-on |
| Tyre | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm |
| Max tyre size | 42mm without mudguards, 40mm with mudguards |
COMPONENTS
| Saddle | Bontrager Montrose Comp, steel rails, 138 mm width |
|---|---|
| Seatpost | Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length |
| *Handlebar | Size: S, M Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width |
| Size: L Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width |
|
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
| *Stem | Size: S, M Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 100 mm length |
| Size: L Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 110 mm length |
|
| Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper |
| Brake rotor | Shimano RT10, CenterLock, 160 mm |
| Rotor size | Max brake rotor sizes: 160 mm front and rear |
**Trek Bikes reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
| 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" |
