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The Marlin 4 is a multi purpose mountain bike for off road use or getting around. Equipped with Shimano 7 speed gears for 14 gears in total and equipped with disc brakes.
The Marlin 4 is a multi purpose mountain bike for off road use or getting around. Equipped with Shimano 7 speed gears for 14 gears in total and equipped with disc brakes.
Trek

Trek Marlin 4 Gen 2 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

Hassle Free Returns

The 30 Day bike exchange allows you to buy a bike with confidence. If you are unhappy with the bike you can return a new bike within 30 days and swap it for a different one. If you’re not happy with your new bike for any reason, please contact us and we can arrange a convenient time bring it back into store and exchange it – so long as it’s clean and isn’t broken – by this we mean things like buckled wheels, crash damage, broken components, cracked frames etc.

Worn brakes and tyres are understandable and we’ll factor this into any exchange.

The 30 Day Bike Exchangeis completely separate from our 30 day returns policy and applies to new and unused bikes. It can only be used once on each new bike purchase.

We do however urge all customers to test ride the bike prior to purchase to ensure they are happy with the fit and ride experience of the bike.

30 DAY RETURNS POLICY ON UNUSED PRODUCTS

Any item, except food can be returned to us for any reason within 30 days, provided it has:

  • Not been used or fitted
  • Is returned in its original packaging
  • Has a valid proof of purchase from Beeline Bicycles

Online or in-store purchases can both be returned to any store free of charge, or can be returned by post.

Click & Collect customers can buy with confidence knowing they can try the item before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away in the store, or you still have up to 30 days to return it if you take it away.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase, Cheque payments will be refunded in cash but due to banking restrictions can only be refunded at least 14 days after the original purchase date.

We are unable to offer any refund without a valid receipt.

FAULTY ITEMS

All products purchased from Beeline Bicycles come with a full warranty which covers manufacturing faults and defects in workmanship. If you feel that your purchase has developed a fault, the fastest response we can offer is to bring your product into store for an assessment. We will need to see your proof of purchase.

If taking your product in store is not an option then please email info@beelinebicycles.co.uk. Please include photographs of your product (please keep below 20mb), a copy of receipt so we can immediately start to assess the issue.

In some cases the manufacturer/supplier and/or Beeline Bicycles may require to see the item(s) before repair or replacement can take place. If this is the case we will advise of return details and lead times.

All used items being returned to us must be cleaned for hygiene purposes.

On receipt of your goods we will carry out a full inspection & contact you within 3 working days of receipt.

Proof of purchase is also required with all potential warranty claims.

RETURNS BY POST

Please provide us with all the details of why you wish to return your purchase, as your input is invaluable to us when reviewing the products we stock.

If you are returning by post, please complete the Returns Formthen attach the returns address label to your parcel. Please include a copy of the returns form and proof of purchase.

It is your responsibility to ensure that the item is returned to us in a safe and secure manner, 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. Return shipping costs are non-refundable. If the item is being returned due to our error then any postage will be reimbursed upon assessment.

It can take 5 days for your parcel to reach us dependent on the courier’s service that is used. Once we receive your parcel we will inspect and process your return within 48 hours. Refunds can take up to 5 days with your bank to appear in your account. You will receive an email update upon the completion for your return.

Trek Marlin 4 Gen 2 Mountain Bike 2025 - Crimson

Season:2025

Brand:Trek

Code:41613RED

Trek: 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.

It's right for you if.... 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.

The tech you get: 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 final word: 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.

Why you'll love it:
  • 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
Technical Information
Frame & Fork
Frame: Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR
Fork: SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5" wheel, 46mm Offset for 29” Wheel, 100 mm QR, 100 mm travel
Wheels & Tyres
Front Hub: Formula DC-20, Alloy, 6-Bolt, 5x100 QR
Rear Hub: Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
Rims: Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
Tyres: Bontrager XR2 Comp, Wire Bead, 30 TPI, 27.5/29x2.20
Gears & Drivetrain
Shifters: Shimano Altus EF500, 2x7 Speed
Front Derailleur: Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
Rear Derailleur: Shimano Tourney TY300
Crank: 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
Brakes
Brakes: Tektro MD-M280 mechanical disc
Brake Rotor: Tektro, 6-bolt, 160mm
Components
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
Grips: Bontrager XR Endurance Comp, Lock-on
Pedals: VP-536 Nylon Platform
Headset: Semi-integrated, 1-1/8"
Weight
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 Marlin Size Guide
SizeHeight (cm)Height (in)
X-Small145 - 154cm4'9" - 5'0"
Small155 - 164cm5'1" - 5'4"
Medium165 - 172cm5'5" - 5'7"
M-Large172 - 180cm5'8" - 5'10"
Large180 - 187cm5'11" - 6'2"
X-Large188 - 195cm6'2" - 6'4"
XX-Large195 - 203cm6'5" - 6'8"
Professional Opinion
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