2024 Trek Marlin 6 Gen 3 Hardtail Mountain Bike

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The 2024 Trek Marlin 6 Gen 3 Hardtail Mountain Bike is the perfect ride for progressing your skills on the trails. Its updated slacker frame geometry makes it easier to control on descents while the upgraded suspension fork takes the edge off bumpy trails. Integrated rack and kickstand mounts make it easy to add accessories to this versatile steed.

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 6 comes with a 100 mm RockShox Judy front suspension fork that cushions rocks, roots and bumps in the trail, 10-speed fuss-free Shimano CUES shifting and the serious stopping power of hydraulic disc brakes.


This bike is perfect for

This is an ideal trail bike for riders who want to progress on the dirt, and want a bike that can keep them rolling off of the trail, too.


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 RockShox fork gives you 100 mm of suspension for turning rocks and roots on 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

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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 - RockShox Judy, coil spring, preload, TurnKey lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel. Size: XS , S - RockShox Judy, coil spring, preload, TurnKey lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel. Size: M , ML , L , XL , XXL - RockShox Judy, coil spring, preload, TurnKey lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel

Hub front - Formula DC-20, alloy, 6-bolt, 100 mm ThruSkew

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

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

Tyre - Size: XXS - Bontrager XT3 Elite, Tubeless Ready, Inner Strength casing, wire bead, 60 tpi, 26x2.35". Size: XS , S - Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60 tpi, 27.5x2.35". Size: M , ML , L , XL , XXL - Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60 tpi, 29x2.35"

Shifter - Shimano U6000, 10-speed

Rear derailleur - Shimano CUES U6000 GS

Crank - FSA Alpha Drive, 30T

Bottom bracket - FSA, 73 mm, threaded cartridge, 122.5 mm spindle

Cassette - Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed

Chain - Shimano LG500

Pedal - VP-536 nylon platform

Saddle - Bontrager Verse Short, stainless steel rails

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 - 14.50 kg / 31.97 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).

Colours GALACTIC GREY TO LITHIUM GREY FADE, LAVA, MIAMI GREEN TO DARK AQUATIC FADE, RAGE RED TO DEEP DARK BLUE FADE
Sizes L, M, ML, S, XL, XS, XXL, XXS
Brand Trek
Model Year 2024
Barcodes 745889338942, 745889364897, 745889364958, 745889471816, 745889471830, 745889471854, 745889471878, 745889471892, 745889471915, 745889471939, 745889471953, 745889471977, 745889471991, 745889472011, 745889472035, 745889472059, 745889472073, 745889472097, 745889472110, 745889472134, 745889472158, 745889472172, 745889472196, 745889472219, 745889472233, 745889472257, 768682028575, 768682029183, 768682029275, 768682029527, 768682029541, 768682030431
SKUs / Part Numbers 5293980, 5293981, 5293982, 5293983, 5293984, 5293985, 5293986, 5293987, 5293988, 5293989, 5293990, 5293991, 5293992, 5293993, 5293994, 5293995, 5293996, 5293997, 5293998, 5293999, 5294000, 5294001, 5294002, 5294003, 5294004, 5294005, 5294006, 5294007, 5294008, 5294009, 5294010, 5294011

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

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