Aluminium full-suspension mountain bike Trek Fuel LX 9 Eagle 90 grey: ZEB and Vivid, 160/170 mm, 17.38 kg

Trek Fuel LX 9 Eagle 90 Lithium Grey: the RockShox enduro bike from S to XL

This Trek Fuel LX 9 Eagle 90 Gen 7 comes with RockShox suspension: a 170 mm ZEB Ultimate fork and a Vivid Ultimate shock for 160 mm at the rear, on an Alpha NEXT Platinum aluminium frame. Trek claims 17.38 kg in a size M. It is offered in four sizes, from S to XL. The Lithium Grey / Trek Black Splatter colourway keeps a low profile with a lithium grey speckled with black splatter.

Technical specifications

Who is it for?

It is aimed at the rider coming from a 140 or 150 mm trail bike who feels they are reaching the limits of their bike on steep sections. It lets you step up a level on the descents without changing how you ride, and also suits smaller or taller riders thanks to its four sizes.

The LVR workshop view

An alloy frame that adjusts like a race frame. The Fuel LX 9 is built on Alpha NEXT Platinum aluminium, the highest grade of Trek's mountain bike alloys (above Alpha Platinum and Alpha Silver). What sets it apart is the kinematics: the progression can be changed, the rocker link and lower shock mount can be swapped, and the ABP pivot on the rear axle keeps the suspension working under braking.

Put simply: this frame adapts to your riding instead of imposing its own. It is heavier than the OCLV Mountain carbon of the 9.8, but it is more forgiving of impacts and easier to repair.

The ZEB Ultimate fork gets a Linear XL spring and ButterCups, small elastomer elements that filter out fine vibrations before they reach your hands. The Charger 3.2 RC2 damper adjusts rebound and compression. On the garrigue trails around Béziers, littered with small stones, that adds up to much less fatigue after two hours.

The Vivid Ultimate shock, in a 205 x 65 mm size, handles the 160 mm at the rear. Its base setting depends on your weight and riding style: it is the first thing to adjust when a new rider takes the bike. We carry out this set-up and show you how to check it yourself.

Which Fuel should you choose?

Our take: the LX 9 Eagle 90 gains 10 mm at each end over the Fuel MX 9 Eagle 90 for 600 g more. The LX 9 X0 AXS keeps the same frame with a wireless drivetrain; the Slash 8 moves to 170 mm at the rear.

Your questions

Why buy from LVR Cycles? As a Trek dealer in Béziers, we set the pressure and rebound of your RockShox suspension at handover and service it season after season.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.