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The 2023 Trek Fuel EX 9.9 XX1 AXS is a performance-first trail bike built for riders who have an appreciation for the finest things in life. It combines a cream of the crop carbon frame with top-tier components, from the carbon fibre wheels all the way up to the 150 mm Kashima-coated FOX Factory fork and fully wireless SRAM XX1 drivetrain. It's a bike that rules the mountain and doesn't hesitate to lay claim to its domain, ripping up rock gardens, blasting berms and rocketing back to the top to conquer it all once again.
A featherweight OCLV Mountain Carbon frame built to handle the rough and rowdy, a pair of finely laced carbon wheels that track through technical terrain with ease and SRAM's top-tier XX1 AXS fully wireless electronic drivetrain. Plus, you get the silky smooth travel of a 150 mm FOX Factory 36 Fork with EVOL air spring and GRIP2 damper and 140 mm of FOX Factory Float rear suspension with 2-position damper, all topped off with adjustable geometry for fine-tuning your ride to you and internal frame storage that lets you keep your set-up tidy without leaving behind trail essentials.
The Fuel EX 9.9 is a bike built to satisfy those with the finest taste. It pairs together an all- mountain trail capable carbon frame with the finest components you'll find on a modern mountain bike, from its carbon hoops to wireless SRAM XX1 AXS shifting. It's all wrapped up with adjustable geometry, so you can fine tune your ride to always feel how you want it.
- You care about the finer things in life, like silky-smooth suspension that feels greater than the sum of its numbers and fully wireless shifting that keep your set-up tidy and low maintenance
- You can tackle any trail on the mountain with its progressive geometry that makes light work of steep, punchy climbs and turns around to rally the descents
- It comes with light and stiff carbon wheels that make quick work of technical terrain and keep you on your line, even when things get hairy
- We expanded our size range to ensure a better fit for all riders, and use the best-fitting wheels for each frame size: XS frames get 27.5? wheels, S frames get to choose between 27.5? or 29?, and sizes M and up get 29? wheels
- With the adjustable angle headset (angled cups sold separately) and Mino Link, you can choose from six different geometry configurations
Mountain biking is an incredibly diverse sport. Mountain bikes now come in three main flavours. They are XC, Trail and Enduro.
XC – short for cross country, are quick race bikes. They will normally have 29” wheels and come with 100mm of suspension. If you are mainly going to be riding bridleways and natural trails in the South East of England, where our shops are, an XC bike will be the quickest and most efficient option.
Trail – these bikes are designed to be pedalled up and down hill and for use on bridleways and natural trails, but also at dedicated trail centres. They normally come with 130mm or 140mm of suspension travel and can have either 27.5” or 29” wheels, but 29” is quickly becoming the norm. Trail bikes are good all-rounders. They won’t be as fast as an XC bike on the flat but they can handle a lot more challenging terrain, and a few jumps. If you plan on taking your bike to trail centres in Wales, or to the Alps, then a trail bike may be your best option.
Enduro – enduro racing is a thing in and of itself but many people buy enduro bikes for ‘aggressive’ trail riding and uplift days at places like Bike Park Wales. This generally means challenging downhill trails with some big jumps. With around 160mm of suspension travel enduro bikes can take some big hits. They are designed to be efficient enough to pedal up hills but really come into their own when pointed downhill. You get enduro bikes in either 27.5” or 29” wheel sizes as well as mullet setups of 29 at the front and 27.5 at the back.
Nearly all the mountain bikes we sell are now unisex. All of the big brands have gradually stopped doing dedicated men’s and women’s bikes over the last few years. Instead they are focussed on producing bikes in a bigger range of sizes. So, for instance, the Trek Marlin 5 is a unisex bike that now comes in sizes from XXS to XXL large. This means it will fit riders from 4’ 5” to 6’ 5” and everything in between.
Trek made their first bikes in 1976 in a barn in Wisconsin. Now they’re one of the biggest bike brands in the world. Trek bikes cover everything from professional-level road and mountain bike race bikes to commuters, hybrids and kids bikes. There is a strong heritage of racing at Trek and many Trek bikes have a strong race influence. They take a very scientific approach to researching bike and human performance and then make the fastest and most efficient bikes they can.
It doesn’t stop their attention and passion for cycling flows through everything they do. Since the 1990s, Trek has supported Places for Bikes. Places for Bikes is an advocacy organisation in the USA that gets more people on bikes more often! Places for Bikes ethos falls in line with the companies mission statement to:
Build only products we love. Provide incredible hospitality to our customers, and change the world by getting more people on bikes.
Frame - OCLV Mountain Carbon, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chain line, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140 mm travel
Fork - Fox Factory 36, Float EVOL air spring, GRIP2 damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel
Shock - Fox Factory Float X, 2-position damper, 185 mm x 55 mm
Wheel front - Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, 6-bolt, Boost110, 15 mm thru-axle
Wheel rear - Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12 mm thru-axle
Skewer rear - Bontrager Switch thru-axle, removable lever
Tyre - Size: XS , S - Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 27.5x2.50". Size: S , M , ML , L , XL - Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50"
Tyre part - Bontrager TLR sealant, 180 ml/6 oz
Rim strip - Bontrager TLR
Shifter - SRAM Eagle AXS, wireless, 12 speed
Rear derailleur - SRAM XX1 Eagle AXS
Crank - SRAM XX1 Eagle, DUB, 30T alloy ring, 55 mm chainline, 170 mm length
Bottom bracket - SRAM DUB MTB Wide, 73 m, BSA threaded
Cassette - SRAM Eagle XG-1299, 10-52, 12-speed
Chain - SRAM XX1 Eagle, 12-speed
Saddle - Bontrager Arvada, austenite rails, 138 mm width
Seatpost - RockShox Reverb AXS, 100 mm travel, wireless, 34.9 mm
Handlebar/stem (integrated) - Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise
Grips - Bontrager XR Trail Elite, nylon lock-on
Head set - Integrated cartridge bearing, 1-1/8" top, 1.5" bottom, angle adjust cup compatible
Brake rotor - SRAM HS2, 6-bolt
Brake Set - SRAM Code RSC hydraulic disc
Bag - Bontrager BITS Internal Frame Storage Bag
Weight - Medium – 14.11 kg/31.11 lb (with TLR sealant, no tubes)
Weight limit - This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Please note: Manufacturers can sometimes change the specification of the products from time to time.
|Colours||DEEP SMOKE, MULSANNE BLUE, SATIN BAJA YELLOW|
|Sizes||L - 29 WHEEL, M - 29 WHEEL, ML - 29 WHEEL, S - 27.5 WHEEL, S - 29 WHEEL, XL - 29 WHEEL, XS - 27.5 WHEEL|
|Barcodes||601842772997, 601842773000, 601842773017, 601842773024, 601842773031, 601842773048, 601842773055, 601842773062, 601842773079, 601842773086, 601842773093, 601842773109, 601842773116, 601842773123, 601842773130, 601842773147, 601842773154, 601842773161, 601842773178, 601842773185, 601842773192|
|SKUs / Part Numbers||5276971, 5276972, 5276973, 5276974, 5276975, 5276976, 5276977, 5276978, 5276979, 5276980, 5276981, 5276982, 5276983, 5276984, 5276985, 5276986, 5276987, 5276988, 5276989, 5276990, 5276991|
You can choose how to receive your new bike. You can click and collect from our stores, pick a fast courier delivery or premium hand delivery. Whichever option you choose your bike will be fully assembled and checked by one of our experienced mechanics.
We regularly check our prices against our competitors to ensure that you are getting a good deal. If you find an item cheaper within seven days of purchase, just let us know and ask us to match the price.
Cycles UK provides 14 days of free insurance on all new bikes sold to UK customers. As part of our service, your new bike is automatically covered with 14 days’ FREE insurance against theft and accidental damage.
Opinions of contact points such as saddles, shoes and grips can vary a lot between different riders. If you buy a contact point from Cycles UK and you don’t find it comfortable, you can return it within 30 days, and we’ll swap it for something else.
On most Trek mountain bikes the XS and S sizes will come with a 27.5" wheel while the M and above will come with a 29" wheel. The XXS size is generally a 26" wheel.
|Rider Height (CM)||134.6 - 144.7||145 - 154.6||155 - 164.75||165 - 172.5||172.75 - 180||180.25 - 187.75||188 - 195.25||195.5 - 203.25|
|Rider Height (Feet and Inches)||4' 4" - 4' 9.0"||4' 9.1" - 5' 0.9"||5' 1.0" - 5' 4.9"||5' 5.0" - 5' 7.9"||5' 8.0" - 5' 10.9"||5' 11" - 6' 1.9"||6' 2" - 6' 4.9"||6' 5" - 6' 8"|
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