2022 Trek

Marlin 4

A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components and mechanical disc brakes.
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MSRP$619
Weight31.7 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCE
Wheels27.5″ / 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

Similar Bikes

Highest gear

(descending)

Spec Level

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

Compare the full Marlin model range

View Comparison
Sizing
XS

4'9" – 5'2"

SM

5'0" – 5'6"

MD

5'4" – 5'9"

MD/LG

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'1" – 6'6"

Rider Fit Notes
  • 6'3", size XL, Just right
Reviews
99 Spokes
Trek Marlin Model Overview: Which is Best for You?

Sep 2023

Not only is the Trek Marlin one of the most searched bikes on our website, it's also Trek's best selling mountain bike! And for good ...

Watch Review

Bikerumor
Trek Upgrades Its Most Popular Bike: The Marlin

May 2023

Riders can expect updated geometry, a new frame, increased tire clearance and a rear axle system that "enhances stability," Trek said.

Read Review

BikeRadar
Trek Marlin 8 review

Feb 2023 · Oscar Huckle

Can the Marlin compete with the bigger players?

Highs
  • Lots of frame sizes

  • Excellent tyre choice

  • Dropper seatpost

  • Upgrade potential

Lows
  • Roomier seated position would be preferred

  • Quick-release rather than thru-axle

  • Rattly internal cable routing

Read Review

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

aluminum frame

BB StandardBSA, 73mm, Threaded

Tire Clearance2.2"

ColorsMatte Trek Black; Voodoo Aloha Green; Matte Anthracite; Magenta

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

Travel100mm

Spring TypeCoil

Bottom Bracket

Size: XS, S, M, ML, L, XL, XXL, VP BC73, 73mm, threaded cartridge; Size: XS, S, M, ML, L, XL, XXL, Sealed cartridge, 73mm

Headset

Semi-integrated, 1-1/8''

Stem

Size: XS, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: S, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: ML, L, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 90mm length

Handlebar

Size: XS, S, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 5mm rise, 720mm width

Saddle

Bontrager Arvada, steel rails, 138mm width

Seatpost

Size: XS, S, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: M, Bontrager alloy, 31.6mm, 12mm offset, 360mm length; Size: ML, L, XL, XXL, Bontrager alloy, 31.6mm, 12mm offset, 400mm length

TypeRigid

Pedals

VP-536 nylon platform

Grips

Bontrager XR Endurance Comp, lock-on

Groupset
Rear Derailleur

Shimano Tourney TY300, long cage, 34T max cog

Front Derailleur

Shimano Tourney TY300, 34.9mm clamp, down swing, down pull

Crank

Size: XS, S, M, Shimano Tourney TY301, 42/34/24, 170mm length; Size: ML, L, XL, XXL, Shimano Tourney TY301, 42/34/24, 175mm length

Shifters

Shimano Altus EF500, 7 speed

Cassette

Shimano TZ500, 14-28, 7 speed

Chain

KMC Z7, 7 speed

Brakes

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, 160mm rotor

TypeMechanical Disc

Wheels
Rims

Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve

Spokes

14g stainless steel

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

Tires

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''

Rider Notes
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Last updated August 15
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