2024 Trek Marlin 7 Gen 3 Hardtail Mountain Bike


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The 2024 Trek Marlin 7 Gen 3 Hardtail Mountain Bike is your best friend on the trail and wherever else you roll thanks to its confidence-boosting trail geometry.

The Marlin 7 is built around a lightweight aluminium frame with modern trail riding geometry and internal routing that keeps cables protected and the bike looking sleek. To fit the widest range of riders the frame and wheels vary according to the size. The XXS size used 26" wheels, the XS and S sizes come with 27.5" wheels and the rest of the sizes use 29" wheels. In addition the XXS and XS bikes come with a curved top tube to further reduce the standover height.

The Marlin 7 has the perfect balance between price and performance with an upgraded RockShox suspension fork that makes quick work of rocks and bumps in your path and the huge gearing range of a SRAM 12-speed SX Eagle drivetrain.

This bike is perfect for

Mountain bikers who want a go-anywhere trail bike that's got upgrades where it matters most, but won't break the bank. You want to build skills on the trail, and need a bike with confidence-inspiring geometry and upgraded components that can keep up with your progress.

Key Features
  • The Marlin Gen 3 gives you serious trail capability with bigger tyre clearance, internal dropper post routing, ThruSkew rear axle and longer, slacker geometry that gives you more stability on steeper trails and at higher speeds
  • Its upgraded RockShox fork gives you 100 mm of suspension for turning rocks and roots in the trail into smooth-sailing
  • Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter
  • Internal routing makes it easy to add a dropper post that lets you lower your saddle on the fly for more confident descending
  • Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount

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 - Size: XXS , XS - Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew. Size: S , M , ML , L , XL , XXL - Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew

Fork - RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout. Size: XS, S - 80 mm travel. M , ML , L , XL , XXL - 100mm travel.

Hub front - Formula DC-20 LW, alloy, 6-bolt, 5x100 mm QR

Hub rear - Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR

Skewer rear - 173x5 mm QR

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

Tyre - Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi

Shifter - SRAM SX Eagle, 12-speed

Rear derailleur - SRAM SX Eagle

Crank - SRAM SX Eagle, 30T steel ring, 49 mm chainline

Bottom bracket - Truvativ Powerspline, 73 mm, threaded cartridge, 118 mm spindle

Cassette - SRAM PG-1210 Eagle, 11-50, 12-speed

Chain - SRAM SX Eagle, 12-speed

Pedal - VP-536 nylon platform

Saddle - Bontrager Verse Short, stainless steel rails

Seatpost - TranzX JD-YSP18, internal routing, 31.6 mm

Handlebar - Bontrager alloy, 31.8 mm

Grips - Bontrager XR Trail Comp, nylon lock-on

Stem - Bontrager Comp, 31.8 mm, 7-degree

Head set - Semi-integrated, 1-1/8"

Brake - Shimano MT200 hydraulic disc

Brake rotor - Shimano RT26, 6-bolt

Brake Set - Shimano MT200 hydraulic disc

Weight - Medium - 14.85 kg / 32.74 lbs (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).

Sizes L, M, ML, S, XL, XS, XXL, XXS
Brand Trek
Model Year 2024
Barcodes 601479192427, 601479192441, 601479192465, 601479192489, 601479192526, 601479192540, 601479192588, 601479192601, 601479192625, 601479192649, 601479192663, 601479192687, 601479192700, 601479192724, 601479192762, 601479192786, 601479192809, 601479192823, 601479192847, 601479192885, 601479212521, 601479212668, 601479212705, 601479212941
SKUs / Part Numbers 5295470, 5295471, 5295472, 5295473, 5295474, 5295475, 5295476, 5295477, 5295478, 5295479, 5295480, 5295481, 5295482, 5295483, 5295484, 5295485, 5295486, 5295487, 5295488, 5295489, 5295490, 5295491, 5295492, 5295493

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

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