2021 Trek X-Caliber 9 Hardtail Mountain Bike in Teal/Volt Fade

£892.50  £1,275.00



XS - 27.5 WHEEL

Part Number:




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2021 Trek X-Caliber 9 Hardtail Mountain Bike in Teal/Volt Fade is the top-end model in the X-Caliber family that will help you cover more trail in less time. It's a fully race-ready cross-country mountain bike built with competition-level parts designed to compete. Trek is a renowned company known around the world. Their bikes are prominently used by professionals in road, gravel and mountain biking.

The X-Caliber 9 is built with hi-spec lightweight parts ensuring reliability. Despite all this, it has the price of a more basic hardtail. X-caliber 9 has a lightweight Alpha Gold Aluminium frame, built to be sturdy with a playful geometry making it easier to control your bike on technical trails and winding singletrack. Sleek internal cable routing gives you clean looks, protects your cables and makes it easy to upgrade to a dropper post for even more capability. The frame is fully compatible with higher-end parts, like race wheels and a dropper post, if you ever find the need to upgrade. RockShox Judy Silver 100 mm suspension air fork with remote lockout letting you lock out the fork without taking your hands off the bars. 1x12 Shimano XT/SLX drive train and a wide-range cassette make it an excellent choice for easier climbing, speeding through singletrack and race-ready. Smart Wheel Sizing means you'll get the fastest wheel that fits (29" wheels on larger frames, 27.5" wheels on smaller frames). The wheels have lightweight alloy rims that save weight and are easy to upgrade to tubeless, with wider Boost141 hubs for increased wheel strength and better tyre clearance. Shimano hydraulic disc, MT4100 lever, MT410 calliper and MT401 lever, MT400 calliper disc brakes provide powerful stopping. Shimano XT M8100, long cage, 51T max cog clutch rear derailleur prevents chain slap, even in the rough. As if all that wasn't enough the X-Caliber 9 has rack and kickstand mounts so you can use it for bikepacking or even running errands.

This bike is great for

X-Caliber 9 is an XC racing mountain bike with hi-spec lightweight parts on an incredible frame. It's perfect for covering epic distances and people ready to race or getting into it.


  • Alpha Gold Aluminium, tapered head tube, internal derailleur frame
  • Dropper post routing
  • Rack and kickstand mount
  • RockShox Judy Silver, Solo Air, TurnKey remote lockout, tapered steerer, Boost110, 15mm Maxle
  • Shimano SLX M7100, 10-51, 12-speed cassette
  • Shimano hydraulic disc with 160mm or 180mm rotors

Mountain Bike Buying Guide

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.

Men’s and women’s mountain bikes

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.

Read our full mountain bike buyers guide

Price Match at Cycles uk

We understand that price is important, so we regularly price-check our competitors to make sure we have the best offers available. We recognise that we will not always be the cheapest, so if you see the same product cheaper from any of our competitors then please get in touch via the form below and we will do our best to match any reasonable advertised price.

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 Alpha Gold Aluminium, tapered head tube, internal derailleur and dropper post routing, rack and kickstand mount, Boost141, 5 mm QR

Fork RockShox Judy Silver, Solo Air, TurnKey remote lockout, tapered steerer, Boost110, 15mm Maxle,

Size: XS 80mm travel

Size: S 100mm travel

Size: M, ML, L, XL, XXL 15 mm Maxle Lite, 100 mm travel

Suspension lever RockShox PopLoc

Max compatible fork travel 120mm (XS: 100mm)

Front hub Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru-axle

Rear hub Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost141, 5 mm QR

Rim Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve

Spokes 15 g stainless

Tyre Bontrager XR3 Comp, wire bead, 30 TPI,

Size: XS, S 27.5x2.20.''

Size: M, ML, L, XL, XXL 29x2.20."

Max tyre size27.5x2.80" or 29x2.40"

Shifter Shimano SLX M7100, 12-speed

Rear derailleur Shimano XT M8100, long cage, 51T max cog


Size: XS, S Shimano MT611, 30T steel ring, alloy spider, Boost, 170 mm length

Size: XS, S Shimano MT610, 30T steel ring, Boost (52mm chain line), 170mm

Size: M, ML, L, XL, XXL Shimano MT611, 30T steel ring, alloy spider, Boost, 175 mm length

Size: M, ML, L, XL, XXL Shimano MT610, 30T steel ring, Boost, 175 mm

Bottom bracket Shimano SM-BB52, 73 mm, threaded external bearing

Cassette Shimano SLX M7100, 10-51, 12-speed

Chain Shimano SLX M7100, 12-speed

Pedal VP-536 nylon platform

Max. chainring size 32T

Saddle Bontrager Arvada, steel rails, 138 mm width

Seatpost Bontrager alloy, 31.6 mm, 12 mm offset,

Size: XS, S 330 mm length

Size: M 360 mm length

Size: ML, L, XL, XXL 400 mm length

Handlebar Bontrager alloy, 31.8 mm, 5 mm rise

Size: XS 690 mm width

Size: S, M, ML, L, XL, XXL 720 mm width

Grips Bontrager XR Trail Comp, nylon lock-on

Stem Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree,

Size: XS, S 60 mm length

Size: M 70 mm length

Size: ML, L 80 mm length

Size: XL, XXL 90 mm length

Headset Semi-integrated, sealed cartridge bearing, alloy cups, 1-1/8" top, 1.5" bottom


Shimano hydraulic disc, MT4100 lever, MT410 calliper and MT401 lever, MT400 calliper

Brake rotor Shimano RT56, 180 mm, 6-bolt & Shimano RT56, 160 mm, 6-bolt

Sizes XS - 27.5 WHEEL
Brand Trek
Model Year 2021
Barcodes 601842177402, 601842177419, 601842177426, 601842177433, 601842177440, 601842177457, 601842177464, 601842407035, 601842407042, 601842407059, 601842407066, 601842407073, 601842407080, 601842407097
SKUs / Part Numbers 1047650, 1047651, 1047652, 1047653, 1047654, 1047655, 1047656, 591216, 591217, 591218, 591219, 591220, 591221, 591222

Please note: Manufacturers can sometimes change the specification of the products from time to time.

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