Marlin 6 | Trek Bikes
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NEW 2019

Marlin 6

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$629.99 Model 23121
Marlin 6 is a quality introductory cross country mountain bike with front suspension, 24 speeds, and a wide range of gearing for easier pedaling on climbs. It's built in Trek's trail heritage, but also equipped with features like mounts for a rack and kickstand that make it a great choice for daily commuters.
Marlin 6 is a quality introductory cross country mountain bike with front suspension, 24 speeds, and a wide range of gearing for easier pedaling on climbs. It's built in Trek's trail heritage, but also equipped with features like mounts for a rack and kickstand that make it a great choice for daily commuters.
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It's right for you if...

You're testing the waters of off-road riding, and want a real mountain bike at a great value, with a wide range of gears to cover more ground on the road and trail.

The tech you get

The heart of Marlin 6 is a lightweight Alpha Silver Aluminum frame with internal derailleur routing. It has 24 speeds, a wide-range cassette so you can always find the right gear for your terrain, hydraulic disc brakes that feel smoother than mechanical disc brakes, and a 100mm suspension fork with a lockout feature—that's the same amount of travel favored by most cross country racers.

The final word

Performance features like suspension lockout, stronger double-walled rims, and hydraulic disc brakes. It's also equipped with rack and kickstand mounts and a wider range of gears. These design details make it a great choice if your mountain bike doubles as your commuter.

The Walkthrough

2019 Marlin

favorite_borderWhy you'll love it

  1. Lots of gears so you can cover a lot of ground fast, without ever pedaling too easy or too hard
  2. Smaller frame sizes (13.5˝ and 15.5˝) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
  3. It has separate brake and shift levers (a feature that's common on more expensive mountain bikes) so you can fine-tune the positioning for comfort
  4. Rack and kickstand mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
  5. Like every model in the Marlin family, it's backed by Trek's lifetime warranty

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Features

Specifications

  • Frameset

    Frame
    Alpha Silver Aluminum, internal derailleur, dropper post and brake routing, chainstay brake mount, rack & kickstand mount, G2 Geometry on 29ers
    Front suspension
    SR Suntour XCT 30 HLO, coil spring, preload, hydraulic lockout, G2 Geometry w/51mm offset on 29ers, 100mm travel (13.5: 80mm travel)
  • Wheels

    Front hub
    Formula DC20 alloy
    Rear hub
    Formula DC22 alloy
    Rims
    Bontrager Connection 32-hole double-walled
    Tires
    Bontrager XR2, 29x2.20˝ front, 29x2.0˝ rear (13.5 & 15.5: 27.5x2.20˝)
  • Drivetrain

    Shifters
    Shimano Altus M310, 8 speed
    Front derailleur
    Shimano Altus M313
    Rear derailleur
    Shimano Altus M310
    Crank
    Shimano Tourney TY501, 42/34/24
    Bottom bracket
    Sealed cartridge, 73mm
    Cassette
    Shimano HG200, 12-32, 8 speed
    Chain
    KMC Z7
    Pedals
    VP-536 nylon platform
  • Components

    Saddle
    Bontrager Arvada
    Seatpost
    Bontrager alloy, 2-bolt head, 31.6mm, 12mm offset
    Handlebar
    Bontrager alloy, 31.8mm, 5mm rise, 720mm width (13.5: 690mm width)
    Grips
    Bontrager XR Endurance Comp
    Stem
    Bontrager alloy, 31.8mm, 7 degree, Blendr compatible
    Headset
    1-1/8˝ threadless, semi-integrated, semi-cartridge bearings
    Brakeset
    Tektro HD-275 hydraulic disc (13.5 & 15.5: Tektro HD-276 short reach lever)
  • Weight

    Weight
    17.5˝ - 14.71 kg / 32.43 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

All measurements provided in cm unless otherwise noted.

Frame size number Wheel size A Seat tube B 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 in 27.5" 34.3 73.5° 9.0 69.5° 54.3 29.2 5.8 43.8 4.4 8.5 104.9 70.5 37.6 56.5
15.5 in 27.5" 36.8 73.5° 9.0 69.5° 55.5 30.2 4.8 43.8 4.4 8.5 106.6 72.8 38.5 57.4
17.5 in 29" 41.9 73.5° 9.0 69.5° 59.5 31.1 5.8 43.8 5.1 8.3 110.9 74.3 41.8 59.8
18.5 in 29" 44.4 73.5° 9.0 69.5° 61.1 31.1 5.8 43.8 5.1 8.3 112.5 75.0 43.4 59.8
19.5 in 29" 47.0 73.5° 10.0 69.5° 63.1 31.1 5.8 43.8 5.1 8.3 114.5 74.7 45.1 60.8
21.5 in 29" 52.1 73.5° 12.0 69.5° 65.2 31.1 5.8 43.8 5.1 8.3 116.7 75.0 46.6 62.6
23 in 29" 55.9 73.5° 13.5 69.5° 67 31.1 5.8 43.8 5.1 8.3 118.6 78.3 48 64.1

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