2024 Trek Marlin 5 Gen 3 Hardtail Mountain Bike


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The 2024 Trek Marlin 5 Gen 3 Hardtail Mountain Bike is a trail-worthy bike that's perfectly suited for everyday adventures, on and off the trail. For 2024 the Marlin 5 comes with the updated Gen 3 frame which has bigger tyre clearance and is more off-road capable.

The Marlin is built around a lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look. Big tyre clearance and slack, confidence-boosting geometry keeps you stable from singletrack to city. The frame and wheels vary according to the size of the bike. The XXS and XS bikes have a curved top tube to reduce the standover height. The XXS bikes comes with 26" wheels, the XS and S sizes come with 27.5" wheels and all other sizes come with 29" wheels.

The Marlin 5 comes with an R Suntour XCT 30 suspension fork, 9-speed Shimano CUES shifting and mounts for a rack and kickstand that make it an ideal choice for trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike.

This bike is perfect for

Riders who are new to the trail and you’re looking for a real mountain bike that doubles as a commuter – and you want it all at an exceptional value.

Key Features
  • The Marlin Gen 3 gives you serious trail capability, with big tyre clearance and slack, confidence-boosting geometry that keeps you stable from singletrack to city
  • Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter
  • Its ThruSkew system is safer, simpler and stronger, plus it makes removing the rear wheel easy for flat fixes in a hurry
  • 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 - Size: XXS - SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 26'' wheel, 100 mm QR, 100 mm travel. Size: XS - SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel. Size: S - SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel. Size: M , ML , L , XL , XXL - SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel

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

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

Rim - Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve

Tyre - Bontrager XT3 Comp, wire bead, 30 tpi

Shifter - Shimano U4000, 9-speed

Rear derailleur - Shimano CUES U4000

Crank - Prowheel C10Y-NW, 30T steel narrow-wide ring

Cassette - Shimano LINKGLIDE LG300, 11-46, 9-speed

Chain - Shimano LG500

Pedal - VP-536 nylon platform

Seatpost - Bontrager alloy, 31.6 mm, 12 mm offset

Handlebar - Bontrager alloy, 31.8 mm

Grips - Bontrager XR Trail Comp, nylon lock-on

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

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

Brake rotor - Tektro, 6-bolt, 160mm

Brake Set - Size: XXS , XS , S Tektro HD-M276 hydraulic disc, short reach. Size: M , ML , L , XL , XXL Tektro HD-M275 hydraulic disc

Weight - Medium size - 15.10 kg / 33.29 lbs (with 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 768682139011, 768682139073, 768682139158, 768682139196, 768682139219, 768682139318, 768682139332, 768682139356, 768682139394, 768682139417, 768682160619, 768682160633, 768682160657, 768682160671, 768682160695, 768682160718, 768682160732, 768682160756, 768682160794, 768682160817, 768682160831, 768682160855, 768682160879, 768682160916, 768682160930, 768682160954, 768682160978, 768682160992, 768682161012, 768682161036, 768682161050, 768682161074
SKUs / Part Numbers 5292505, 5292506, 5292507, 5292508, 5292509, 5292511, 5292512, 5292513, 5292514, 5292515, 5292516, 5292517, 5292518, 5292519, 5292520, 5292521, 5292522, 5292523, 5292524, 5292525, 5292526, 5292527, 5292528, 5292529, 5292530, 5292531, 5292532, 5292533, 5292534, 5292535, 5292536, P5292510

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

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