The Trek Top Fuel has forged a reputation over the years for being a lightweight, super-fast, cross-country race weapon. For 2020 however, the Wisconsin-based firm has switched things up to make it more versatile and capable on all types of terrain.
Unsurprisingly, this has resulted in a hike in suspension travel, which jumps from 100mm (all round) to 120mm in the front and 115mm in the rear. The frame is also longer and more relaxed with better clearance for wider tyres and longer dropper posts, while a fixed lower shock mount (as found on the Slash and Remedy) is said to improve frame stiffness and cable routing.
A new addition to the Top Fuel is Trek's Active Braking Pivot (ABP) which keeps the suspension active under braking for better control in corners. It also benefits from a Mino Link geometry adjustment system (flip-chip), which lets you fine-tune the head- and seat tube angle as well as the bottom bracket height.
Other noteworthy features include Control Freak internal cable management that tidies up and stops cable rattle and rub - something that plagued its predecessor. As has become the norm on contemporary mountain bikes the Top Fuel is available in 1x drivetrain format only and can accommodate chainrings of up to 34T in size.
The addition of more travel, burlier 2.4-inch tyres and other trail-focused trinketry has ultimately affected the Top Fuel's kerb-weight, the lightest model of which tips the scales at a rather portly 11.8kg (Top Fuel 9.9 AXS).
Range and pricing:
- Trek Top Fuel 8 - £2,600 / US$3,299
- Trek Top Fuel 9.7 - £3,500 / US$3,999
- Trek Top Fuel 9.8 - £4,800 / US$5,499
- Trek Top Fuel 9.9 - £7,800 / US$8,999
- Trek Top Fuel 9.9 XX1 ASX - £8,700 / US$9,999