The 2021 Trek FX Sport Carbon 4 Hybrid Bike in Dark Aquatic is a carbon fibre fitness bike for riders who want the speed of a lightweight road bike with the comfort & control of a flat handlebar. An Iso Speed decoupler smooths out rough roads & the 1x 11 drive train simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides. The FX Sport Carbon 4 Carbon is built around a lightweight OCLV Carbon frame which not only makes the bike really light but also helps to soak up vibration from the roads & gives you amazing power transfer so you get the best out of every pedal stroke. The Iso Speed decoupler soaks up even more bumps so you will be comfortable even on rough roads & cycle paths.A Shimano GRX 1x 11 drive train with a wide-range cassette is designed for gravel bikes so give you plenty of speed but also enough range to get up really steep hills. Shimano hydraulic disc brakes for all-weather stopping power & a lightweight tubeless ready wheel set complete a high end build. Plus, it's easy to accessorise with mudguards, lights & more! This bike is perfect for Riders who want the speed & lightness of a road bike with the more comfortable upright riding position of a hybrid. 1x gearing & hydraulic brakes make this a versatile bike that can be used every day. Key Features· The 1x drive train 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· Iso Speed – a decoupler at the seat tube/top tube junction that absorbs fatiguing bumps from the road so you can stay stronger for 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 & send your ride data to your favourite fitness app when you add Duo Trap S