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The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack.
The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack.
Trek

Trek Marlin 4 Gen 2 Hardtail Mountain Bike 2025 Crimson

£500.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Quick & Easy Returns

Returns made easy!

Please read and fully understand this policy before returning goods to us. With exception of Warranty Claims, Faulty or Damaged goods (See terms below), we can only accept a return on an item if it is completely unused and in its original condition.
  1. Please pack the item carefully in its original packaging.
  2. Download and Print the returns slip.
  3. Fully complete the returns slip and include it in the package.
  4. Contact us to arrange a courier collection, or make your own arrangements for postal/courier service.

Returns Address

Pauls Cycles Returns
Unit A, 13 Yaxham Road
Dereham
Norfolk
NR19 1HB

Returns & Exchanges Policy Summary

We offer a 14 day returns period from the date of receipt.

It is your responsibility to ensure that the item is returned to us safely and securely, we suggest that you use a recorded postal/courier service. Please ensure that the service you use covers the value of the goods in the parcel.

We are unable to accept returns where the goods or packaging has been used, lost, damaged or is otherwise not in the condition you received it in. Bikes must be returned in a securely packaged bike box.

If you would like us to arrange a collection via courier, then we can do so at a cost of £50. Should you fail to be present for an arranged collection, you will be charged £20 to rebook.

We will refund up to £10 for private postage of faulty or damaged items.

If you would like to exchange an item, we will happily send out a replacement product once the original has been returned.

Refunds will be made to the original payment method - this may take up to 10 days to appear depending on the method of payment. Initial shipping costs are non-refundable.

We are unable to offer a refund without proof of purchase.

We cannot accept returns without a completed returns form.

Signing for delivery receipt of items that have clearly been damaged by the courier is the responsibility of the receiver.

Items that are damaged during a return as a result of inadequate packaging will be declined and returned to you, or charged for.

Faulty Goods and Warranties

If the item that has been received is faulty, damaged or not as described then we will cover the cost of return postage (up to £10) and offer a refund or exchange. In these instances, we would always recommend using our own shipping services.

Important information to note about returning faulty, damaged or not-as-described items:

Pauls Cycles issue no warranties, all warranties are issued by manufacturers. For this reason, we may need to send your goods to the manufacturer for inspection before taking any action. Please see the relevant manufacturer's website for full warranty information.

Only products that are faulty, damaged or not as described by ourselves are eligible for returns/exchanges. If damage has been caused through wear and tear, improper care or some other factor beyond our control then it will not be covered.

Once a faulty item has been used, or if the packaging has been damaged it can still be returned to us, however, we - and the manufacturer - reserve the right to offer a repair, replacement or partial refund.

Remember it is your responsibility to ensure that returned items are packaged appropriately - any damage caused in transit [as a result of inadequate packaging] will be chargeable.

We cannot accept any cycle warranty claim or return for incorrect pedal fitment or damage to crank arms caused by incorrect pedal fitment as described in the helpsheet supplied with all of our bikes.

If the wheels on the bike you've ordered become untrue through use, or the gears need readjustment after initial use, this unfortunately not covered under warranty.

Trek Marlin 4 Gen 2 Hardtail Mountain Bike 2025 Crimson

Season:2025

Brand:Trek

Code:41613RED

The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack.

It's ideal for riders who want a mountain bike with knobby tyres that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting and mounts for a rack and mudguards make this a great bike for trail riders and campus commuters alike.

You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop kerbs on the way to class.

A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful mechanical disc brakes and a suspension fork that takes the edge off bumps and rough terrain.

The Marlin is made for any adventure. The rack and mudguard mounts make it a great choice for commuters who want to get a little rad on the way to class or the shops.

Features:
  • The Marlin Gen 2 gives you all-around versatility with fast-rolling tyres and balanced, neutral geometry that keeps you comfortable and in control off-road. No wonder it’s our best-selling mountain bike ever.
  • Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter
  • Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
  • Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount
  • Like every Trek, it's backed by a lifetime warranty
Please note: Not all bikes come with pedals. It's always best to check specification before you place your order. Shop our Pedal collection.
Technical Information
  • Frame
    Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
  • Fork
    SR Suntour XCE 28, coil spring, preload, 100 mm QR, (80 mm travel XS)
  • Head set
    Semi-integrated, 1-1/8"
  • Wheelset
    Quick Release Alloy;
  • Max tyre size
    Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer
  • Shifters
    Shimano Altus EF500, 7-speed
  • Front derailleur
    Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
  • Rear derailleur
    Shimano Tourney TY300
  • Chainset
    ProWheel TM-CY10, 36/22
  • Bottom bracket
    VP BC73, 73 mm, threaded cartridge
  • Cassette
    Shimano TZ500, 14-34, 7-speed
  • Chain
    KMC Z7, 7-speed
  • 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
  • Stem
    Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree
  • Brakes
    Tektro MD-M281 mechanical disc, 6-bolt, 160mm
  • Weight
    M - 14.60 kg / 32.19 lbs
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Sizing Information

Trek Bikes Size Guide

Rider Height (ft, in)4'4" - 5'0"5'1" - 5'5"5'5" - 5'9"5'8" - 5'11"5'10" - 6'2"6'2" - 6'5"6'4" - 6'6"
Rider Height (cm)137 – 155155 - 165165 - 176173 - 180177 - 188188 - 195196 – 203
Mountain BikeXSSMMLLXLXXL
Road Bikes44495254565861
Hybrid BikesSMMLLXL


Size Guides are a great way to help you find the right bike, but we always recommend visiting our store to view and sit on the bike in person where possible or speaking to our advice team.

This Size Guide is based on an average build, if you have shorter arms or longer legs for example you will need to consider this when purchasing a bike. If you are between sizes, we always recommend sizing down as a smaller bike can be made bigger with adjustments. Stem length, Saddle height, Handlebar width and even Crank length can be changed to achieve the ideal riding position. See here for our general bike sizing guide.

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