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.
You're ready to log big miles, and you prefer the feel of a flat handlebar to the drop bars that come stock on most road bikes. You prioritize comfort and performance equally, and want the simplicity a 1x drivetrain provides.
A lightweight 400 Series OCLV Carbon frame and fork, a Shimano Deore 1x drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheelset, wide, fast-rolling Bontrager GR1 Expert gravel tires, and a vibration-absorbing handlebar and ergonomic grips.
Fast, capable, comfortable. This bike has a road -smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain.
Size | Rider Height | Inseam |
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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" |
Frame size letter | Wheel size | A — Seat tube | B — Seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
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XS | 700c | 35.6 | 75.0° | 11.5 | 70.0° | 52.8 | 28.5 | 6.5 | 44.2 | 5.0 | 7.4 | 104.7 | 70.8 | 38.3 | 54.3 |
S | 700c | 40.6 | 74.5° | 14.0 | 70.5° | 54.3 | 28.5 | 6.5 | 44.2 | 5.0 | 7.1 | 105.4 | 75.1 | 38.5 | 56.8 |
M | 700c | 45.7 | 74.0° | 16.5 | 71.0° | 56.3 | 28.5 | 6.5 | 44.2 | 5.0 | 6.8 | 106.5 | 78.7 | 39.3 | 59.4 |
L | 700c | 50.8 | 73.5° | 19.0 | 71.5° | 58.3 | 28.5 | 6.5 | 44.2 | 5.0 | 6.4 | 107.5 | 81.2 | 40.0 | 62.0 |
XL | 700c | 55.9 | 72.5° | 21.5 | 72.5° | 61.3 | 28.5 | 6.5 | 44.2 | 5.0 | 5.8 | 108.2 | 84.8 | 41.0 | 64.8 |
Fork | Carbon, hidden fender mounts, flat mount disc, 5x100mm thru-skew |
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Hub front | Formula CL-51 alloy, 100x5mm QR |
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Hub rear | Formula CL-52 alloy, 135x5mm QR |
Rim | Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, presta valve |
Tire | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c |
Max tire size | 42c without fenders, 40c with fenders |
Shifter | Shimano Deore M4100, 10 speed |
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Rear derailleur | Shimano Deore M5120, long cage |
*Crank | Size: XS, S Prowheel alloy, 42T narrow-wide ring, 170mm length |
Size: M, L, XL Prowheel alloy, 42T narrow-wide ring, 175mm length | |
Cassette | Shimano Deore M4100, 11-46, 10 speed |
Chain | KMC X10, 10 speed |
Pedal | Bontrager City pedals |
Max chainring size | 44T |
Saddle | Bontrager H1 |
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Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 330mm length |
*Handlebar | Size: XS, S Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width |
Size: M, L, XL Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width | |
Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
*Stem | Size: XS Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
Size: S, M Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length | |
Size: L, XL Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length | |
Brake Set | Promax DSK-927 hydraulic disc, flat mount, 160mm rotor |
Rotor size | Max brake rotor size: 160mm |
Weight | M - 10.74 kg / 23.68 lbs |
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Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |