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Bike Perfect
Bike Perfect
Lifestyle
Guy Kesteven

Are small evolutions enough to keep Trek’s all-new Top Fuel Gen 4 in the hunt for more ‘bike of the year’ wins?

Trek
Two riders on the new Trek Top Fuel Gen 4.

The last generation of Trek’s Top Fuel took it further on its journey toward trail riding from its XC origins, but reviewers and customers confirmed that was the right direction with multiple awards and very healthy sales for a human-powered bike in an increasingly electrified environment. It's no surprise then that they’ve stayed on a very similar trajectory with the latest Gen 4 Top Fuel, so what are the changes and are they enough to make it worth buying compared to a Gen 3 version?

The latest Top Fuel sheds half a pound (220g) of frame weight compared to the previous version. And that applies to both carbon and alloy frames (Image credit: Trek)
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