2025 Trek Marlin 4 Gen 2 - Dnister Black
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.
-
OVERVIEW
-
SPECS
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 hydraulic 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 is ready to roll with easy to use features that help you get the best bang for your buck
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 – spec applies to all sizes unless listed separately
Frameset
Wheels
Hub front Formula DC-20, alloy, 6-bolt, 5x100 mm QR
Hub rear Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
Skewer rear 152x5 mm QR
Rim Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
Spokes 14 g stainless steel, black
*Tyre Size: XS , S
Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"
Size: M , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"
Max tyre size Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer
Drivetrain
*Shifter Size: XS , S , M , L , XL , XXL
Shimano EF500, 2-speed
Size: XS , S , M , L , XL , XXL
Shimano Altus EF500, 7-speed
Front derailleur Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
Rear derailleur Shimano Tourney TY300
*Crank Size: XS , S , M
ProWheel TM-CY10, 36/22, 170 mm length
Size: L , XL , XXL
ProWheel TM-CY10, 36/22, 175 mm length
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
Max. chainring size 1x: See FAQ, 2x: 36T, 3x: 42T
Components
Saddle Bontrager Verse Short, stainless steel rails
*Seatpost Size: XS , S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
Size: M
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
Size: L , XL , XXL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
*Handlebar Size: XS , S
Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
Size: M , L , XL , XXL
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips Bontrager XR Endurance Comp, lock-on
*Stem Size: XS , S
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
Size: M
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length
Size: L
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length
Size: XL , XXL
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length
Head set Semi-integrated, 1-1/8"
*Brake Size: XS , S , M , L , XL , XXL
Tektro MD-M280 mechanical disc
Size: XS , S , M , L , XL , XXL
Tektro MD-M281 mechanical disc
Size: XS , S , M , L , XL , XXL
Tektro MD-M280 mechanical disc, 160 mm rotor
Size: XS , S , M , L , XL , XXL
Tektro MD-M281 mechanical disc, 160 mm rotor
Brake rotor Tektro wave, 6-bolt, 160 mm
Rotor size Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer
Weight
Weight M - 14.60 kg / 32.19 lb
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
Shipping
We aim to have each order fulfilled and shipped within 3-5 working days after your order being paid.
Link to your shipping policy.
Delivery
Shop online at biket and choose between 2 convenient delivery options.
Click and collect your orders in store.
Door-to-door courier countrywide.
Refunds
Please note we do not offer straight refunds, these are issued as store credits only.
WHO ARE WE
Biket is one of South Africas Top Online Cycling Stores, based in Hillcrest, KZN.
We offer a range of the highest quality cycling products from Trek bikes, Giant bikes, Scott bikes, Bontrager & Oakley apparel, and a full service centre. Our aim is to offer the highest quality cycling products paired with the best advice.
Looking for something in one of our brands you can't find on the online store, drop us a message and we will assist.
Please note some products may show sold out, which means they aren't in store. Add these to quote and submit the order and we'll try our best to get the product at the best possible price for you.
