2023 Trek Marlin 7 Gen 2 Hardtail Mountain Bike
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The 2023 Trek Marlin 7 Gen 2 Hardtail Mountain bike is where race-worthy mountain bikes begin. The Marlin 7 takes the great value Marlin frame and adds a smooth, lightweight RockShox fork and upgraded parts to make an exceptional cross country hardtail that will hold its own against higher-end race bikes.
All of the Trek Marlin bikes are built around a lightweight Alpha Silver Aluminium frame with internal routing to protect your cables and add to the bike's sleek look. The frame is set up for off-road riding but also comes with all the mounts you need for pannier racks and kickstands so it can double-up as a hardened commuter.
The Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you're on the fastest wheel that fits. The smallest sizes come with 27.5" rather than 29" wheels and even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.
The Marlin 7 is the flagship model of the Marlin line-up and has a high-quality RockShox fork with a lockout and 100 mm of travel, a 1 x 10 drivetrain, Shimano hydraulic disc brakes and a low-profile Shimano Shadow rear derailleur that's designed to avoid snagging on trail debris.
This bike is perfect for
Riders who are new to mountain biking and want a serious single-track ready bike with race-ready parts for superior performance so you can take on off-road marathon rides and XC races as well as bossing your commute.
Key features
- All the value, plus all the versatility – it's a race-worthy mountain bike, with rear rack mounts if you use it for commuting too
- It's enjoyable to ride and feels like a much more expensive mountain bike
- Great suspension at an even better price
- The 1x drivetrain gives you all the gears you need and none you don't
- Like every Trek, it's backed by a lifetime warranty
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
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 | Unisex, Aluminium, Size 56 |
| Wheel Size | Size 29 |
| Gears | Shimano Deore M5120, long cage, 10 Gears |
| Rear Brake | Shimano MT200 hydraulic disc Shimano RT26, 6-bolt,180 mm // Shimano RT26, 6-bolt,160 mm, Disc brake with hydraulic actuation |
| Front Brake | Shimano MT200 hydraulic disc Shimano RT26, 6-bolt,180 mm // Shimano RT26, 6-bolt,160 mm, Disc brake with hydraulic actuation |
| Tyres | Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20" |
| Rear Derailleur | Shimano Deore M5120, long cage |
| Crankset | FSA Alpha Drive, 28T steel ring, Boost, 175 mm length |
| Shifters | Shimano Deore M4100, 10 speed |
| Chain | KMC X10, 10-speed |
| Casette | Shimano Deore M4100, 11-46, 10-speed |
| Headset | Semi-integrated, 1-1/8" |
| Handlebar | Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width |
| Stem | Bontrager alloy, 31.8 mm clamp, Blendr-compatible, 7-degree, 90 mm length |
| Bartape / Grips | Bontrager XR Trail Comp, nylon lock-on |
| Seatpost | Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length |
| Saddle | Bontrager Arvada, steel rails, 138 mm width |
| Front Light | |
| Rear Light | |
| Kickstand |
Please note: Manufacturers can sometimes change the specification of the products from time to time.
| Colours | GLOSS MIAMI GREEN, MARIGOLD TO RADIOACTIVE RED FADE, MATTE NAUTICAL NAVY/MATTE ANTHRACITE |
| Sizes | L - 29 WHEEL, M - 29 WHEEL, ML - 29 WHEEL, S - 27.5 WHEEL, XL - 29 WHEEL, XS - 27.5 WHEEL, XXL - 29 WHEEL |
| Brand | Trek |
| Model Year | 2022 |
| Barcodes | 601842388617, 601842388624, 601842388631, 601842388648, 601842388655, 601842388662, 601842388679, 601842388686, 601842388693, 601842388709, 601842388716, 601842388723, 601842388730, 601842388747, 601842581643, 601842581650, 601842581667, 601842581674, 601842581681, 601842581698, 601842581704 |
| SKUs / Part Numbers | 1046892, 1046893, 1046894, 1046895, 1046896, 1046897, 1046898, 1046899, 1046900, 1046901, 1046902, 1046903, 1046904, 1046905, 5259541, 5259542, 5259543, 5259544, 5259545, 5259546, 5259547 |
Why buy from Cycles UK?
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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.
Comfort Guarantee
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.
Trek Mountain Bike Size Guide
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.
| Size | XXS | XS | S | M | M/L | L | XL | XXL |
| 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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