Sorry! Trek 2021 Trek X-Caliber 7 Hardtail Mountain Bike is no longer available.

2021 Trek X-Caliber 7 Hardtail Mountain Bike

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M - 29 WHEEL

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2021 Trek X-Caliber 7 Hardtail Mountain Bike in Mulsanne Blue/Anthracite is the perfect entry point to fast cross-country riding and racing. It's a fully capable hardtail mountain bike with expert tech where it matters most. 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 7 has a lightweight, sturdy aluminium frame with 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 RockShox Judy SL Fork is lighter than coil sprung and has a rebound adjust and can be tuned to the rider's weight, it's way higher quality than what you'd normally get on an mountain bike at this price. The Shimano 1x drive train delivers a wide range of gearing with the simplicity of a single shifter and a wide range of gears for climbing. Smart Wheel Sizing means you'll get the fastest wheel that fits (29? wheels on larger frames, 27.5? wheels on smaller frames). Wheels are also tubeless-ready with wider Boost141 hubs for increased wheel strength and better tyre clearance. Shimano MT200 hydraulic disc brakes provide powerful stopping. As if all that wasn't enough the X-Caliber 7 has rack and kickstand mounts so you can use it for bikepacking or even running errands.

This bike is great for

X-Caliber 7 gets you into the world of cross-country riding. Perfect for local XC trails and even racing. It's a bike that has the same features found on higher-end bikes, making it a bike you won't grow out of and great value for money.


  • Alpha Gold Aluminium, tapered head tube, internal derailleur frame
  • Dropper post routing
  • Rack and kickstand mount
  • RockShox Judy SL fork with 80mm or 100mm of travel
  • Shimano Deore M4100, 11-46, 10-speed
  • Shimano MT200 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 SL, Solo Air spring, TurnKey lockout, tapered steerer, 42 mm offset, 100x5 mm QR,

Size: XS 80 mm travel

Size: S 100 mm travel

Size: M, M/L, L, XL, XXL RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, 46 mm offset, 100x5 mm QR, 100 mm travel

Front hub Formula DC-20, alloy, 6-bolt, 100 mm ThruSkew

Rear hub Formula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5 mm QR

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

Spokes 14 g stainless steel, black

Tyre Bontrager XR2 Comp, wire bead, 30 TPI

XS, S 27.5x2.20."

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

Shifter Shimano Deore M4100, 10 speed

Rear derailleur Shimano Deore M5120, long cage

Crank Shimano Deore M5100, 30T steel ring, Boost

Size: XS, S, M 170 mm length

Size: M/L, L, XL, XXL 175 mm length

Cassette Shimano Deore M4100, 11-46, 10-speed

Chain KMC X10, 10-speed

Pedal VP-536 nylon platform

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: M/L, L, XL, XXL 400 mm length

Handlebar Bontrager alloy, 31.8 mm, 5 mm rise

Size: XS 690 mm width

Size: S, M, M/L, 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: M/L, L 80 mm length

Size: XL, XXL 90 mm length

Head set Semi-integrated, loose ball bearing, 1-1/8" top, 1.5" bottom

Brake Shimano MT200 hydraulic disc

Brake rotor

Size: XS, S, M, M/L, L, XL, XXL Shimano RT26, 160 mm, 6-bolt

Size: L, XL, XXL Shimano RT26, 180 mm, 6-bolt

Brand Trek
Model Year 2021
Barcodes 601842406618, 601842406625, 601842406632, 601842406649, 601842406656, 601842406663, 601842406670, 601842406687, 601842406694, 601842406700, 601842406717, 601842406724, 601842406731, 601842406748
SKUs / Part Numbers 1047699, 1047700, 1047701, 1047702, 1047703, 1047704, 1047705, 1047706, 1047707, 1047708, 1047709, 1047710, 1047711, 1047712

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

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