Trek FX Sport 4 Carbon
$2,599.00
In StockIn StockOut of stock-
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. An IsoSpeed decoupler smooths out rough roads and the 1x11 drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.
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- 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
- IsoSpeed—a decoupler at the seat tube/top tube junction that absorbs fatiguing bumps from the road so you can stay stronger longer
- On your left, roadie! This fitness bike is more than capable of taking on speedy group road rides
- You can pair FX Sport with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S
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*spec applies to all sizes unless otherwise noted
FRAMESET
Frame 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 142x12mm thru axle Fork FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 405mm axle-to-crown, 100x12mm thru axle WHEELS
Hub front Formula alloy, centerlock disc, 100x12mm thru-axle Skewer front Bontrager Switch thru axle, removable lever Hub rear Shimano RXC400, centerlock, Shimano 11-speed freehub, 142x12mm thru axle Skewer rear Bontrager Switch thru axle, removable lever Rim Bontrager Tubeless Ready Disc, 32-hole, presta valve Spokes 14g stainless steel Tire Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c Max tire size 35c without fenders, 32c with fenders DRIVETRAIN
Shifter Shimano RS700, 11 speed Rear derailleur Shimano GRX RX812, long cage, 42T max cog *Crank Size: XS, S
Shimano GRX RX600, 40T ring, 170mm lengthSize: M, L, XL
Shimano GRX RX600, 40T ring, 175mm lengthBottom bracket Shimano BB71, 86.5mm, PressFit Cassette Shimano SLX M7000, 11-42, 11 speed Chain Shimano HG601 Pedal Wellgo M141, resin body, alloy cage COMPONENTS
Saddle Bontrager H1 Seatpost Bontrager alloy, 27.2mm, 12mm offset, 330mm length *Handlebar Size: XS, S
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm widthSize: M, L, XL
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm widthGrips Bontrager Satellite IsoZone Plus, lock-on, ergonomic *Stem Size: XS
Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 90mm lengthSize: S, M
Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 100mm length
Size: L, XL
Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 110mm length
Headset 1-1/8'' threadless, sealed cartridge bearings *Brake Size: XS, S, M, L, XL
Shimano hydraulic disc, MT201 lever, UR300 caliperSize: XS, S, M, L, XL
Shimano MT201 hydraulic disc, flat mount, 160mm rotorBrake rotor Shimano RT10, centerlock, 160mm WEIGHT
Weight M - 9.55 kg / 21.06 lbs Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). **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.
**Weights are based off pre-production products at time of publication. Weights may vary in final production.
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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"