Marlin 4 is the perfect gateway to trail riding. It’s ideal for new riders who want a mountain bike with knobby tyres, that can double as a rugged commuter. Disc brakes, front suspension, 21 speeds and mounts for a rack and mudguards make this a great bike for new 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, 21 speeds, 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
- It’s a real mountain bike that’s also perfectly suited to daily commutes, rides around campus or just getting from A to B on any surface
- 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
*Frame |
Size: XS Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135×5 mm QR |
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Size: M , ML , L , XL Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135×5 mm QR |
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*Fork |
Size: XS SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5″ wheel, 100 mm QR, 80 mm travel |
Size: M , ML , L , XL SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29″ wheel, 100 mm QR, 100 mm travel |
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Max compatible fork travel | 100mm (XS and S: 490mm axle-to-crown, M and up: 509mm axle-to-crown) |
Hub front | Formula DC-20, alloy, 6-bolt, 5×100 mm QR |
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Hub rear | Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135×5 mm QR |
Skewer rear | 152×5 mm QR |
Rim | Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve |
*Tyre |
Size: XS Bontrager XR2 Comp, wire bead, 30 tpi, 27.5×2.20″ |
Size: M , ML , L , XL Bontrager XR2 Comp, wire bead, 30 tpi, 29×2.20″ |
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Size: M , ML , L , XL Bontrager XR2 Comp, wire bead, 30 tpi, 29×2.00″ |
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Max tyre size | Frame: 29×2.20″ (XS & S: 27.5×2.40″), Fork: See manufacturer |
*Shifter |
Size: XS , M , ML , L , XL Shimano Altus EF500, 7-speed |
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Size: XS , M , ML , L , XL Shimano Altus EF500, 3-speed |
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Front derailleur | Shimano Tourney TY300, 34.9 mm clamp, down swing, down pull |
Rear derailleur | Shimano Tourney TY300 |
*Crank |
Size: XS , M Shimano Tourney TY301, 42/34/24, 170 mm length |
Size: ML , L , XL Shimano Tourney TY301, 42/34/24, 175 mm length |
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*Bottom bracket |
Size: XS , M , ML , L , XL VP BC73, 73 mm, threaded cartridge |
Size: XS , M , ML , L , XL Sealed cartridge, 73mm |
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Cassette | Shimano TZ500, 14-28, 7–speed |
Chain | KMC Z7, 7-speed |
Pedal | VP-536 nylon platform |
Max. chainring size | 1x/2x: 34T, 3x: 42T |
Saddle | Bontrager Arvada, steel rails, 138 mm width |
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*Seatpost |
Size: XS Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length |
Size: M Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length |
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Size: ML , L , XL Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length |
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*Handlebar |
Size: XS Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width |
Size: M , ML , L , XL Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width |
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*Grips |
Size: XS , M , ML , L , XL Bontrager XR Endurance Comp |
Size: XS , M , ML , L , XL Bontrager XR Endurance Comp, lock-on |
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*Stem |
Size: XS Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 50 mm length |
Size: M Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length |
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Size: ML , L Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length |
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Size: XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 90 mm length |
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Head set | Semi-integrated, 1-1/8″ |
*Brake |
Size: XS , M , ML , L , XL Tektro MD-M280 mechanical disc, 160 mm rotor |
Size: XS , M , ML , L , XL Tektro MD-M281 mechanical disc, 160 mm rotor |
Weight | M – 14.40 kg / 31.75 lb |
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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.