Trek Marlin 4 Mountain Bike 2018

Free delivery available Stock items dispatched next working day.

The Marlin 4 comes with a ride-tuned aluminum frame that is mountain tough and the extended size range gives you a better fit for a better ride

0% finance available at the checkout

from as little as £27.74 per month with a 10% deposit Open Finance Calculator

Need advice? Speak to one of our experts

Need more information on this product? Why not speak to our friendly expert team who will do their best to answer your queries. Phone us on 01704 835 720


Your item has been added to your basket. Click here to view your basket

Don’t forget to add your essentials! Click here to view

Trek Marlin 4 Mountain Bike 2018

  • Frame Alpha Silver Aluminium w/semi-integrated head tube, rack and mudguard mounts, G2 Geometry on 29ers
  • Front suspension SR Suntour M-3030, coil spring, preload, 75mm travel
  • Wheels Formula alloy hubs, Bontrager AT-550 36-hole alloy 
  • Rims Bontrager AT-550 36-hole alloy
  • Spokes Bontrager Approved
  • Tyres Bontrager XR2, 29x2.20" front, 29x2.00" rear (13.5 & 15.5: 27.5x2.20")
  • Shifters Shimano Altus EF51, 7-speed
  • Front derailleur Shimano Tourney TY500
  • Rear derailleur Shimano Tourney TY300
  • Crank Shimano Tourney M131, 42/34/24
  • Bottom bracket Sealed cartridge
  • Cassette Shimano TZ21 14-28, 7-speed
  • Chain KMC Z51
  • Pedals Wellgo nylon platform Saddle Bontrager Evoke 1
  • Seatpost Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset
  • Handlebar Bontrager Riser, 25.4mm, 30mm rise
  • Stem Bontrager alloy, 25.4mm, 15-degree
  • Grips Bontrager Satellite Plus, ergonomic
  • Headset 1-1/8" threadless, semi-integrated, semi-cartridge bearings
  • Brakeset Tektro alloy linear-pull


This is a great entry level mtb to get you started on your mtb journey. I found when building the bike that the frame and fork are well spec`d for this style of bike. The entry level shimano gearing gives you plenty of range to get you up the hill but also down the decent.

Alex - Formby Cycles Staff Member

Write a review

Rider's Height Suggested Frame Size
5'0"- 5'5" (152 - 165cm) X-Small
5'4"- 5'8" (162 - 172cm) Small
5'7"- 6'1" (170 - 185cm) Medium
6'0" - 6'4" (182 - 193cm) Large
6'3" - 6'8" (190 - 203cm) X-Large

Your Cycling Essentials

  • Altura Script Short Sleeve Tee
    £19.99 £17.99
    More info
  • Altura Cadence Baggy Shorts
    £49.99 £44.99
    More info
  • Specialized Tactic II Helmet
    £64.99 £58.49
    More info

We also recommend...

  1. Trek Marlin 7 Mountain Bike 2018
    More info
    From as little as £13.74 per month with a 10% deposit
  2. Trek Marlin 6 Mountain Bike 2018
    More info
    From as little as £35.62 per month with a 10% deposit
  3. Trek Marlin 5 Mountain Bike 2018
    More info
    From as little as £31.12 per month with a 10% deposit

For all the latest news and offers
Subscribe to our newsletter

Birthday:  /