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Bright red and a coherent spec: the third-generation Trek Marlin 5 combines an Alpha Silver aluminium frame, a Suntour XCT 30 fork with hydraulic lockout (80 mm in XS, 100 mm on larger sizes), a Shimano CUES 1x9 drivetrain and 27.5 or 29-inch wheels depending on size, for 15.10 kg in size M. Fury Red is an intense, glossy red, full of energy.
| Frame | Alpha Silver aluminium, internal cable routing, dropper post routing, rack and kickstand mounts, ThruSkew 135x5 mm |
| Fork | SR Suntour XCT 30 coil, preload, hydraulic lockout, 100 mm (80 mm in XS) |
| Drivetrain | Shimano CUES 1x9, CUES U4001 32T chainset, LINKGLIDE LG300 11-46 cassette, LG500 chain |
| Brakes | Disc brakes, Shimano RT26 rotors: 180 mm front and 160 mm rear (160 mm front and rear in XS and S) |
| Wheels / tyres | Formula hubs, Bontrager Connection rims / Bontrager Montrose Comp 2.40 in (27.5 in on XS and S, 29 in on larger sizes) |
| Cockpit | Bontrager 690 to 750 mm alloy handlebar, Bontrager Comp 35 to 70 mm stem |
| Saddle / seatpost | Bontrager Verse Short / Bontrager alloy seatpost 31.6 mm |
| Weight | 15.10 kg in size M (Trek figure) |
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At a glance
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For the novice mountain biker who wants to improve on the trails and take part in their first organised rides, for the rider returning to sport who wants a motivating bike, or for the growing teenager moving up to an adult size. It suits sporty weekend rides as well as everyday journeys.
Alpha aluminium, Trek's expertise. Under the Alpha name, Trek groups its aluminium alloys by level of finish. The Marlin 5 inherits Alpha Silver, built to last: thick tubes where impacts are concentrated, cables routed inside the frame so they do not rub, and routing already in place for a dropper seatpost. It is a frame that is happy to grow old with you.
| Alpha Silver (Marlin 5) | Alpha Gold (Roscoe 8) | Alpha Platinum (Farley 5) | |
| Level | Entry point to the aluminium MTB range | More aggressive trail hardtail | Lighter aluminium, fat bike use |
| Construction | Reinforced tubes, versatile geometry | Tapered head tube, Boost, ISCG 05 | Refined frame, plenty of mounts |
| Reference bike | Marlin 4 to 7 | Roscoe 8 | Farley 5 |
| What it means | Tough, versatile, easy to maintain | Takes a 140 mm fork | Takes 4.50-inch tyres |
In short: the Marlin 5 keeps the frame shared by the whole Marlin family and brings two real improvements over the Marlin 4: a ninth gear with a wider-range cassette, and a fork lockout, which is invaluable on the road. It weighs 200 g more than the Marlin 4 in size M, a difference you will not feel on the trail.
To progress, you need a predictable bike. The Marlin 5 has stable geometry, generous tyres and a fork that smooths out the bumps, so your first technical sections are tackled with more confidence. XS and S run on 27.5-inch wheels, more agile for smaller riders; the other sizes on 29-inch wheels, which roll over obstacles more easily.
The 11-46 cassette offers a very low gear for climbing the ramps of the Montagne Noire, and the fork lockout saves you from tiring yourself needlessly on road links. We recommend a service after the first few months of use to check cable and spoke tension. Fury red makes you want to ride, and it is easy to spot in a group.
| Model | Fork | Drivetrain | Wheels / tyres | Weight (M) |
| Marlin 4 | Suntour XCE 28, 100 mm | Shimano ESSA 1x8 | 29 x 2.40 in (inner tube) | 14.90 kg |
| Marlin 5 | Suntour XCT 30, 100 mm, lockout | Shimano CUES 1x9 | 29 x 2.40 in (inner tube) | 15.10 kg |
| Marlin 6 | RockShox Judy, 100 mm | Shimano CUES 1x10 + dropper post | Tubeless Ready rims | 15.00 kg |
| Marlin 7 | RockShox Judy Silver air, 100 mm | SRAM NX Eagle 1x12 + dropper post | Maxxis Rekon Tubeless Ready | 14.15 kg |
Our take: the Marlin 5 is a good starting point for progressing. If you already know you will be looking for descents, the Marlin 7 and its adjustable air fork will speed up your progress.
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LVR sizing advice In XS and S, the Marlin 5 rolls on 27.5-inch wheels with a lowered top tube that is easier to step over; from size M it moves to 29-inch wheels. If you are between two sizes, choose the smaller one if you are new to trails.
Source: Trek size guide. Bike fitting available in our Béziers shop. |
| 27.5 or 29 inches? | It depends on the size: 27.5 in XS and S, 29 inches from size M. |
| When should the first service be done? | After a few months or a few hundred kilometres, as cables and spokes settle. |
| Can I ride it in the mountains? | Yes, the 11-46 cassette makes the climbs of the Montagne Noire easier. |
| Does the red stay bright? | Yes, with regular cleaning and a frame protection film. |
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The LVR Cycles verdict A motivating mountain bike for progressing, stable and easy to maintain, with low gearing well suited to the hills of the hinterland. Its Fury red does not go unnoticed.
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Why buy from LVR Cycles? Our Béziers team advises you on the right size, carries out the first service and points you to the finest routes in the region.
Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.
Data sheet
Specific References