2021 Trek

Marlin 4

A 29″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components and mechanical disc brakes.
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MSRP$529
Weight31.1 lbs  
FrameAluminum
SuspensionHardtail, 75mm
ForkSuntour
Wheels29″ / 29″ Aluminum
Drivetrain3 × 7
GroupsetTourney, Altus
BrakesMechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Marlin 4
Other Crosscountry bikes
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)

26 mph

Marlin 4

27 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Reviews
Bicycling
The Trek Marlin 7 Has The Heart Of A Race Bike

Dec 2019

This cheap mountain bike is the perfect gateway drug to your next (trail riding) addiction.

Highs
  • Wide range of gears with 2x9 drivetrain

Lows
  • Wheels and tires aren’t tubeless-ready

Read Review

MBR
Trek Marlin 6 review - MBR

Jun 2019 · Alan Muldoon

The first of two 29er to make it into the sub 500 category, the Trek Marlin 6 certainly didn't behave like a fish out of water.

Highs
  • Top-rate frame quality, available in seven sizes Independent Shimano shifters

Lows
  • Cable and chain rattle. Rear tyre is too skinny

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Alpha Silver Aluminium w/semi-integrated head tube, rack and mudguard mounts, G2 Geometry on 29ers

Tire Clearance2.2"

ColorsMatte Anthracite; Matte Quicksilver; Green-Light; Magenta

Fork

SR Suntour M-3030, coil spring, preload, 75 mm travel

Travel75mm

Spring TypeCoil

Bottom Bracket

Sealed cartridge

Headset

Semi-integrated, 1-1/8''

Stem

Bontrager alloy, 31.8mm, 7 degree, Blendr compatible

Handlebar

Bontrager alloy, 31.8mm, 15mm rise

Saddle

Bontrager Evoke 1

Seatpost

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

TypeRigid

Pedals

Wellgo nylon platform

Grips

Bontrager Satellite Plus, ergonomic

Groupset
Rear Derailleur

Shimano Tourney TY300

Front Derailleur

Shimano Tourney TY500

Crank

Shimano Tourney TY301, 42/34/24

Shifters

Shimano Altus EF500, 7 speed

Cassette

Shimano TZ21 14-28, 7 speed

Chain

KMC Z51

Brakes

Tektro M280 mechanical disc

TypeMechanical Disc

Wheels
Rims

Bontrager Connection 32-hole double-walled

Spokes

Size: XS, S, M, ML, L, XL, XXL, 14g, stainless; Size: M, 14g, stainless steel, black

Front Hub

Formula DC20 alloy

Rear Hub

Formula DC31 alloy

Tires

Bontrager XR2, 29x2.20˝ front, 29x2.00˝ rear (13.5 & 15.5: 27.5x2.20˝)

Rider Notes
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Last updated February 18
Not listed for 425 days