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2022 Trek Marlin Mountain Bike Range Explained

Words by Cycles UK

on 26/07/2021 17:30:15


The Trek Marlin is claimed to be the most popular mountain bike in the world, and we certainly sell a lot of them! For the 2022 model year (launched in spring 2021) the Marlin range has been extended so it now includes 5 different models, each of which comes in up to 4 different colours and up to 8 different sizes. In this guide we are going to take you through the key differences between the models and what you get for your money.


In previous years there have been men’s and women’s specific versions of the Marlin with their own colour schemes and slightly different specifications. For 2022 all of the Trek Marlin bikes are unisex.

Frames and Wheel Sizes

As part of the change to make the 2022 Trek Marlin a unisex bike it now comes in a much bigger range of wheel sizes, frame sizes and frame shapes. The very smallest bikes now come with a 26” wheel and are designed to suit riders from 4’ 5” to 4’ 9”. The very biggest bikes come with a 29” wheel and are designed to suit riders from 6’ 5” to 6’ 8”. In between these extremes the Xsmall and Small bikes come with a 27.5” wheel and are designed to suit riders from just over 4’ 9” to just under 5’ 5”. The most common sizes (medium, medium/large and large) all come with a 29” wheel.

As well as coming with smaller wheels the smaller bikes come with curve in the top tube of the frame. This is designed to lower the stand over height of the bike so it is easier to get your feet on the ground.


2022 Trek Marlin 4 - £450


The Marlin 4 is new for 2022 and is the entry level bike in the range. Trek very much pitch it as a general use bike that you can use for commuting and getting around town as much as riding off-road. It comes with all the mounting points you need for luggage racks and mudguards. It comes with Shimano Tourney gears with 3 cogs at the front and 7 at the back for 21 gears total and is equipped with mechanical disc brakes.

2022 Trek Marlin 5 - £525


The Marlin 5 is still aimed at riders who want a bit of a general use bike for commuting but it is geared to be used off-road first and foremost. As a result it comes with a couple of key upgrades including a lockout on the suspension fork for more efficient climbing. Hydraulic disc brakes for better all-weather stopping power and Shimano Altus gears with 2 cogs at the front and 8 at the back for 16 gears total. This will give a similar range of usable gears to the Marlin 4 but with less to go wrong. The Shimano Altus equipment is also sturdier than the Tourney level gears on the Marlin 4 so is better suited to off-road use.

2022 Trek Marlin 6 - £625


The Marlin 6 is where you shift from a general use bike into a more dedicated off-road mountain bike. It can still be used on the commute, but it is more at home off-road. The biggest change from the Marlin 5 is that the Marlin 6 comes with a 1x chainset. This is now the standard for most proper mountain bikes and means you only get 1 chainring at the front and you then get wide range Shimano Deore 10 speed cogs at the back. This gives you enough range for off-road riding and will get you up the hills but does mean you can end up running out of gears out on longer road sections. The rest of the specification is similar to the Marlin 5 with a lockout suspension fork and hydraulic disc brakes.

2022 2022 Trek Marlin 7 - £800

2021 Trek Marlin 7 Mens Hardtail Mountain bike in Marigold

Where the Marlin 6 is designed and an off-road ready bike the Marlin 7 is designed to get you racing, and comes with the right equipment to let you enter your first XC races. That includes and higher quality Rockshox fork and tubeless ready wheels so you can run the lighter and more puncture resistant tubeless setup. The gears are basically the same 1x Shimano Deore 10 speed setup as the Marlin 6 but the brakes are a slightly higher quality.

2022 Trek Marlin 8 - £900

Marlin8_21_34649_A_Primary (1)

The Marlin 8 is a new model for 2022 and is the top of the range. It is aimed at people who want to race or do bigger off-road adventures. The key upgrade over the Marlin 7 is a Rockshox Air fork with lockout. Because the Marlin 8 has an air fork you can adjust the pressure yourself to suit your own preferences and how you want to ride the bike. Added to this are 1x 12 speed SRAM Eagle gears with a massive 50T top cog at the back so you can claw your way up even the steepest climbs. Tubeless ready wheels, Maxxis tyres and Shimano hydraulic disc brakes complete this build to give you a really capable off-road bike.