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2016 Trek

Marlin 7

A 27.5″ / 29″ aluminum frame crosscountry bike with modest components.
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FrameAluminum
Wheels27.5″ / 29″ Aluminum
Drivetrain3 × 9
GroupsetAcera, Altus
BrakesTektro Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

31 mph

Marlin 7

27 mph

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Highest gear

(descending)

Reviews
BikeRadar
Trek Marlin 6 review

Dec 2015 · Guy Kesteven

Violently uncontrolled fork and blunt frame lead a list of reasons that Trek’s Marlin is best kept away from real off roading. Buy if you're a glutton for punishment looking to get into mountain biking

Highs
  • Size-specific wheels, range of paint jobs available

Lows
  • Punishingly stiff frame and handlebars, undamped fork, some poor finishing kit

Read Review

Rider Notes
Marlin 7 rider review

Feb 2026 · Rider #4031

This was the first mountain bike I bought, and as my skills progressed, so did the components. Rockshox fork, specialized knobbies, crank brothers ped

Highs
  • i loved the feel in the cockpit. Feels right.

Lows
  • Front fork

Read Review

Specs
Build
Frame

Alpha Silver Aluminum w/semi-integrated head tube, rack & fender mounts, G2 Geometry on 29ers

Headset

1-1/8" threadless, semi-integrated, semi-cartridge bearings

Stem

Bontrager Elite, 31.8mm, 7 degree, Blendr compatible

Handlebar

Bontrager alloy, 31.8mm, 15mm rise

Saddle

Bontrager Evoke 1.5

Seatpost

Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset

TypeRigid

Pedals

Wellgo nylon platform

Groupset
Rear Derailleur

Shimano Acera M390

Front Derailleur

Shimano Altus

Crank

Shimano M351, 40/32/22

Shifters

Shimano Altus M370, 9 speed

Cassette

Shimano HG20, 11-34, 9 speed

Brakes

Tektro M290 hydraulic disc

TypeTektro Hydraulic Disc

Wheels
Rims

Formula alloy hubs, Bontrager AT-650 rims

Tires

Bontrager XR2, 29x2.20" front, 29x2.00" rear (Bontrager XR2, 27.5x2.20")

Rider Notes
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First added June 29

Last updated June 29

Not listed for 3,256 days