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Trek Marlin 4

Trek Marlin 4
  • Color: Matte Quicksilver
  • Color: Matte Quicksilver
  • Color: Matte Anthracite
  • Color: Magenta
$459.99 - $479.99
Please select options


Marlin 4 is the perfect gateway to trail riding. It's ideal for new riders who want a mountain bike with knobby tires that can double as a rugged commuter. Disc brakes, front suspension, 21 speeds, and mounts for a rack and fenders make this versatile ride an excellent entry point 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 curbs on the way to class. Disc brakes, knobby tires, and 21 speeds make Marlin 4 a great choice.

The tech you get
Marlin 4 has 21 speeds with a wide range of gearing for easy riding on varied terrain. It's modeled after our higher-end mountain bikes and built with a lightweight Alpha Aluminum frame, mechanical disc brakes for increased stopping power in any weather conditions, and a suspension fork with 75mm of travel—just enough to absorb the big bumps and keep you cruising.

The final word
Marlin 4's greatest gift is its versatility. It's built-in Trek's mountain bike heritage and totally capable of taking on the trails. But it's an efficient daily rider, too. The rack and fender mounts make it a great choice for commuters who want to get a little rad on the way to class or the grocery store.

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
- The flat mountain-style handlebar and disc brakes keep you in control, on or off the trail
- Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
- Backed by Trek's limited lifetime warranty


Frame Alpha Silver Aluminum, rack & fender mounts,
Fork SR Suntour M-3030, coil spring, preload, 75mm travel
Headset Semi-integrated, 1-1/8''
Axles Front: 100mm QR
Rear: 135x5mm QR
Rims/Wheels Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Hubs Front: Formula DC-20, alloy, 6-bolt, 5x100mm QR
Rear: Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR
Spokes 14g stainless steel
Tires Bontrager XR2, 29x2.20'' front, 29x2.00'' rear (13.5 & 15.5'': 27.5x2.20'')
Crankset Shimano Tourney TY301, 170mm length
Chainrings 42/34/24T
Bottom Bracket VP BC73, 73mm, threaded cartridge
Chain KMC Z51
Front Derailleur Shimano Tourney TY500, 34.9mm clamp, top swing, dual pull
Rear Derailleur Shimano Tourney TY300, long cage, 34T max cog
Cassette/Rear Cogs Shimano TZ21 14-28, 7 speed
Shifters Shimano Altus EF500, 7 speed
Handlebars Bontrager Riser, 25.4mm, 30mm rise, 620mm width
Tape/Grips Bontrager Satellite Plus
Stem Bontrager alloy
Brakes Tektro MD-M280 mechanical disc, 160mm rotor
Pedals Wellgo nylon platform
Saddle Bontrager Evoke 1, steel rails

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Matte Quicksilver / X-Small / 27.5-inch 601479648993 548461 MAR30737719R
Matte Quicksilver / Small / 27.5-inch 601479649006 548462 MAR30431087R
Matte Quicksilver / Medium / 29-inch 601479649020 548464 MAR28297911R
Matte Quicksilver / Medium/Large / 29-inch 601479649037 548465 MAR28124237R
Matte Quicksilver / Large / 29-inch 601479649044 548466 MAR28430210R
Matte Quicksilver / X-Large / 29-inch 601479649051 548467 MAR28226353R
Matte Quicksilver / XX-Large / 29-inch 601479649068 548468 MAR27843506R
Matte Anthracite / X-Small / 27.5-inch 601842092095 582925 MAR27443528E
Matte Anthracite / Small / 27.5-inch 601842092101 582926 MAR26519796E
Matte Anthracite / Medium / 29-inch 601842092125 582928 MAR25860997E
Matte Anthracite / Medium/Large / 29-inch 601842092132 582929 MAR26257016E
Matte Anthracite / Large / 29-inch 601842091999 582930 MAR25636822E
Matte Anthracite / X-Large / 29-inch 601842091982 582931 MAR26686672E
Matte Anthracite / XX-Large / 29-inch 601842092002 582932 MAR27490449E
Magenta / X-Small / 27.5-inch 601842092026 582933 MAR194929A
Magenta / Small / 27.5-inch 601842092040 582934 MAR18930984A
Magenta / Medium / 29-inch 601842092033 582936 MAR17744711A
Magenta / Medium/Large / 29-inch 601842092071 582937 MAR18562491A