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Trek Marlin

Trek Marlin
Collections Trek Marlin

The Trek Marlin is a trail-capable hardtail made for everything from your first off-road loops to quicker cross-country rides.

Our range includes the latest 2026 Trek Marlin Gen 3 models plus the Trek Marlin+ 8 eBike for riders who want a hand on the climbs.

Most models come in seven frame sizes, from XS to XXL and a range of colours. You can spread the cost with finance or save through our Cycle to Work scheme.

Shop Trek Marlin ↓

Frame sizes XS–XXL Seven sizes on most models
Prices from £525 2026 Marlin Gen 3
Every model Hydraulic disc brakes
Ways to pay Finance or Cycle to Work

Which Trek Marlin is right for you?

Every Marlin has a lightweight aluminium frame, front suspension and hydraulic disc brakes, so even the entry-level model is ready for the trails. Here’s what you get as you move up the range:

ModelBest forForkGearsDropper postPrice
Entry-levelTrek Marlin 4First trail rides100 mm coil8-speed Shimano–£525
Trek Marlin 5All-round riding100 mm coil with lockout9-speed Shimano CUESDropper-ready£625
Trek Marlin 6Technical trails100 mm RockShox Judy, coil10-speed Shimano CUES✓£850
Trek Marlin 7Cross-country performance100 mm RockShox Judy Silver, air12-speed SRAM Eagle✓£1,000
Trek Marlin+ 8 ElectricRiding further with assist120 mm RockShox Recon, air12-speed Shimano Deore–£2,650

FAQs about Trek Marlin

Is the Trek Marlin full suspension?

No, the Marlin is a hardtail mountain bike with front suspension only which keeps it lighter and simpler to maintain plus it’s better value than a full-suspension bike. If you’re still weighing up the options, browse all our mountain bikes.

Is the Trek Marlin good for beginners?

Yes, the Marlin is one of the most popular first mountain bikes. It’s comfortable on towpaths and forest tracks, and capable enough for proper trail riding as your confidence grows. Every model has hydraulic disc brakes for reliable stopping in all conditions.

What’s the difference between the Trek Marlin 5, 6 and 7?

The main differences are the fork, the gears and the dropper post:

  • Marlin 5: coil-sprung fork with a lockout and 9-speed gearing.
  • Marlin 6: RockShox Judy fork, 10-speed gearing and a dropper post.
  • Marlin 7: adds an air-sprung fork you can tune to your weight and 12-speed SRAM Eagle gearing.
What size Trek Marlin do I need?

Most Marlin models come in seven sizes, from XS to XXL. XS and S frames use 27.5" wheels, and medium and larger frames use 29" wheels, so riders of most heights get a bike that fits well. The XS has a curved top tube for a lower standover height, which makes it a good choice for smaller riders.

Is there an electric Trek Marlin?

Yes, the Trek Marlin+ 8 adds a Bosch Active Line Plus motor and 400 Wh battery to a 120 mm hardtail. It also has 12-speed Shimano Deore gearing, four-piston brakes and wide 2.6" tyres for grip.

Why Buy From Buy A Bike?

We’re a family-owned bike shop that has been helping riders since 1976, with specialist, unbiased advice to help you choose the right Marlin and size. Order online for fast UK delivery or use Click & Collect.

If you’d rather see the bikes first, visit our Charnock Richard showroom for a test ride, or call our team on 01257 794991.
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