2020 Trek Marlin 5

Aluminium

£275

Frame checkedBexleyheath
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Description

This is a lovely Trek bike Small frame size ideal for a 10-13yr old depending on their size. Both my boys have used this bike for school and occasional MTB. Recently fully serviced with rear tyre replaced. Some supe rficial scratches as you would expect but a lovely bike in great condition.

2020 Trek Marlin 5 in detail

This 2020 Trek Marlin 5 is an aluminium mountain bike. The seller describes the condition as excellent. It is located in Bexleyheath.

It has 27 gears. Brakes are hydraulic discs. Wheels are 27.5, with tubeless tyres. It is a hardtail, so front suspension only.

It was last serviced in July 2026. The sale includes proof of purchase. Pedals fitted are flat.

Details supplied by the seller.

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Overview

  • Year2020
  • Frame sizeNot specified
  • ConditionExcellent
  • Frame materialAluminium
  • Wheel size27.5
  • Drivetrain27
  • Brake typeHydraulic disc
  • CategoryMountain bike
  • SuspensionFront suspension
  • FitKids'
  • ColourOrange
  • Tyre typeTubeless
  • Country of originUnited Kingdom
  • PedalsFlat

Condition by component

How the seller rates the main parts.

  • FrameVery Good
  • WheelsExcellent
  • BrakesExcellent
  • DrivetrainExcellent
  • TyresExcellent
What these ratings mean
Excellent
As new. No marks beyond light polishing swirls, and nothing worn far enough to think about replacing.
Very Good
Light cosmetic marks from normal use. Everything works as it should and nothing is near the end of its life.

Additional information

9 more details from the seller.

Known Issues

Some superficial scratches on the frame

This bike's history

Service history
On file
Last serviced
30 Jul 2026
Proof of purchase
Receipt on file
4 checks passed

Any questions?

Private Seller

Joined this year

Collection only
Bexleyheath

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Where this bike is

BexleyheathApproximate area, not the address
Collection onlyAgreed with the seller

Locations are shown to the nearest town. Arrange the exact meeting point with the seller.

Before you buy

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About this advert

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Trek Marlin 5 pros and cons

Drawn from what the seller filled in on this advert. Anything they left blank is listed under Cons, so you know what to ask before you travel.

Pros

  • Stolen check on this frame came back clear
  • Frame number recorded, so it can be checked against a stolen-bike registry and rider-filed theft reports
  • Seller says the original proof of purchase is available

Cons

Used Mountain Bikes Buyer's Guide UK

Hardtail 2019+ £500-£1,200, full-suspension £1,500-£4,000.

Author: Cyclesite editorial team

Reviewed 29 April 2026 · 16 min read

Read the guide
2020 Trek Marlin 5