Marlin 4 | Trek Bikes
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2020

Marlin 4

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$489.99 Model 29759

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, fenders, and kickstand make this versatile ride an excellent entry point for new trail riders and campus commuters alike.

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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 Silver Aluminum frame that has internal routing to protect your cables, an integrated kickstand mount, 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.

favorite_borderWhy you'll love it

  1. 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
  2. The flat mountain-style handlebar and disc brakes keep you in control, on or off the trail
  3. Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
  4. Like every model in the Marlin family, it's backed by Trek's lifetime warranty

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Features

Fit for every rider

Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.

High tech, high value

Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal cable routing, which can help your cables last longer by protecting them from the elements.

Will my bike have a curved top tube?

Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. The larger frames (M and ML) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
*Frame Size: XS , S
Alpha Silver Aluminum, low standover, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR
Size: M , ML , L , XL , XXL
Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR
*Fork Size: XS
SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel
Size: S
SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel
Size: M , ML , L , XL , XXL
SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Wheels
Front hub Formula DC-20, alloy, 6-bolt, 5x100mm QR
Rear hub Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR
Rim Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes 14g, stainless
*Tire Size: XS , S
Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''
Size: M , ML , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20''
Size: M , ML , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.00''
Drivetrain
Shifter Shimano Altus EF500, 7 speed
Front derailleur Shimano Tourney TY300, 34.9mm clamp, down swing, down pull
Rear derailleur Shimano Tourney TY300, long cage, 34T max cog
Crank Shimano Tourney TY301, 42/34/24, 170mm length
Bottom bracket VP BC73, 73mm, threaded cartridge
Cassette Shimano TZ500, 14-28, 7 speed
Chain KMC Z7, 7 speed
Pedal VP-536 nylon platform
Components
Saddle Bontrager Arvada, steel rails, 138mm width
*Seatpost Size: XS , S
Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Size: M
Bontrager alloy, 27.2mm, 12mm offset, 360mm length
Size: ML , L , XL , XXL
Bontrager alloy, 27.2mm, 12mm offset, 400mm length
*Handlebar Size: XS , S
Bontrager alloy, 31.8mm, 15mm rise, 660mm width
Size: M , ML , L , XL , XXL
Bontrager alloy, 31.8mm, 5mm rise, 720mm width
Grips Bontrager XR Endurance Comp, lock-on
*Stem Size: XS
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length
Size: S
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length
Size: M
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 80mm length
Size: ML , L
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 90mm length
Size: XL , XXL
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 100mm length
Headset Semi-integrated, 1-1/8''
*Brake Size: XS , S , M , ML , L , XL , XXL
Tektro MD-M280 mechanical disc, 160mm rotor
Size: XS , S , M , ML , L , XL , XXL
Tektro MD-M281 mechanical disc



  • Weight

    Weight
    M - 14.50 kg / 31.97 lbs (with tubes)
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
  • 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, colors, and materials.
    Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

    Sizing & fit

    The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

     

    Rider Height

    Inseam

    All measurements provided in cm unless otherwise noted.

    Frame size number Frame size letter Wheel size A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
    13.5 XS 27.5" 34.3 73.5° 73.5° 9.0 69.3° 54.3 29.2 5.8 43.8 4.2 8.8 104.9 69.8 37.6 56.5
    15.5 S 27.5" 36.8 73.5° 73.5° 9.0 69.3° 55.5 30.2 4.8 43.8 4.2 8.8 106.6 72.4 38.5 57.4
    17.5 M 29" 41.9 71.9° 73.0° 9.0 69.5° 60.2 31.1 5.8 43.8 4.2 9.3 110.0 74.8 41.8 60.2
    18.5 ML 29" 44.4 71.9° 73.0° 9.0 69.5° 61.8 31.0 5.8 43.8 4.2 9.3 111.6 75.8 43.4 60.2
    19.5 L 29" 47.0 71.9° 73.0° 10.0 69.5° 63.8 31.0 5.8 43.8 4.2 9.3 113.7 75.7 45.1 61.1
    21.5 XL 29" 52.1 71.9° 73.0° 12.0 69.5° 65.9 31.0 5.8 43.8 4.2 9.3 115.9 76.9 46.6 63.0
    23.0 XXL 29" 55.9 71.9° 73.0° 12.0 69.5° 67.3 31.1 5.8 43.8 4.2 9.3 117.3 80.4 48.0 63.0

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