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The Trek Fuel EX 9.9 X0 AXS Gen 7 relies on a very complete RockShox Ultimate suspension package: a Lyrik Ultimate fork with Charger 3.1 RC damper and DebonAir+ spring (150 mm), and a Super Deluxe Ultimate RC2T shock (145 mm). With its OCLV Mountain carbon frame and SRAM X0 AXS drivetrain, it weighs 14.08 kg in a size M. Its Gloss Dark Carmine/Matte Trek Black paint pairs a deep, glossy carmine with a rich matte black.
| Frame | OCLV Mountain carbon, integrated storage, adjustable progression, threaded BSA 73, ISCG 05, UDH hanger, Boost |
| Suspension | RockShox Lyrik Ultimate Charger 3.1 RC 150 mm / Super Deluxe Ultimate RC2T 145 mm |
| Drivetrain | Wireless SRAM X0 Eagle AXS T-Type 1x12, 30T chainring, XS-1295 10-52 cassette, X0 Eagle chain |
| Brakes | SRAM Maven Silver hydraulic 4-piston, HS2 rotors 200 mm (front) and 180 mm (rear) |
| Wheels / tyres | Bontrager Line Pro 30 carbon / Maxxis Minion DHF (front) and DHR II (rear) 2.5, EXO+, Tubeless Ready |
| Cockpit | Race Face ERA carbon 800 mm handlebar, 27.5 mm rise, Race Face Turbine R 40 mm stem |
| Saddle / seatpost | Trek Aeolus Pro with carbon rails, 145 mm / wireless RockShox Reverb AXS, 150 to 200 mm depending on size |
| Weight | 14.08 kg in size M (Trek figure, with tubeless sealant) |
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At a glance
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It is aimed at the demanding mountain biker who likes to refine settings to suit the terrain and knows what they want from their suspension. It suits the rider who alternates technical rides through the garrigue with fast descents, and wants to tailor the bike to each.
OCLV carbon, Trek's signature. Since 1992, Trek has cured its fibres under pressure for void-free frames. The Mountain version reinforces the areas hit by rocks and landings. Frameset: 3.31 kg (M), with lifetime warranty.
| OCLV Mountain (Fuel EX 9.8 / 9.9) | Alpha NEXT Platinum (Fuel EX 5 to 9) | Road OCLV (Madone, Domane) | |
| Level | MTB carbon, alloy frame rocker | Trek premium aluminium | Trek road carbon |
| Construction | OCLV reinforced in exposed areas | Hydroforming, smoothed welds | OCLV lightened to the maximum |
| Fuel EX frameset (M) | 3.31 kg | 4.95 kg | not applicable |
| What it means | Base of the lightest Fuel EX | 1.64 kg more on the frame | Not made for MTB impacts |
Put simply: same frame as the 9.8 models; the 1.20 kg saving over the 9.8 XT comes down to the kit.
The Charger 3.1 RC offers precise compression and rebound adjustment, and the spring's ButterCups filter out the fine vibrations that tire your hands. On the rough, rocky tracks around Béziers, they make a real difference to comfort after two hours in the saddle.
The Super Deluxe RC2T shock offers compression adjustment and a platform lever for climbing. Combined with the frame's adjustable progression, it lets you fine-tune the bike's behaviour; we offer a set-up session in our workshop.
| Model | Frame | Travel rear / front | Drivetrain | Weight (M) |
| Fuel EX 9.8 XT | OCLV Mountain carbon | 145 / 150 mm | Mechanical Shimano XT | 15.28 kg |
| Fuel EX 9.9 X0 AXS | OCLV Mountain carbon | 145 / 150 mm | Wireless SRAM X0 Eagle AXS | 14.08 kg |
| Top Fuel 9.8 XT Di2 | OCLV Mountain carbon | 120 / 130 mm | Wireless Shimano XT Di2 | 14.00 kg |
| Fuel LX 9.8 XT Di2 | OCLV Mountain carbon | 160 / 170 mm | Wireless Shimano XT Di2 | 15.97 kg |
Our take: the RockShox Ultimate suspension on the 9.9 is the same as on the 9.8 Eagle 90: the gap widens with the carbon wheels, the wireless components and the scales, at 14.08 kg in M, the lightest in the Fuel EX range.
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LVR sizing advice If you are between two sizes, the smaller favours handling on technical trails, the larger composure when the terrain speeds up. The Reverb AXS goes from 150 mm in S to 200 mm from L, and size S uses a 27.5-inch rear wheel.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| What are ButterCups? | Elastomer elements in the fork that filter out small vibrations. |
| Do I have to set it up myself? | We give you a baseline suited to your weight, then you fine-tune it to your feel. |
| Suspension servicing? | It depends on use; we service both the Lyrik and the shock. |
| Is the carmine red loud? | It is rather dark and deep, and stands out nicely against the matte black. |
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The LVR Cycles verdict A top-end Fuel EX for riders who like to set up their suspension precisely. The glossy carmine red on matte black captures its sporty character perfectly.
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Why buy from LVR Cycles? As a Trek dealer in Béziers, we set up and service your RockShox suspension and prepare your Fuel EX for your favourite trails.
Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.
Data sheet
Specific References