2020 Trek

Marlin 4

A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components and mechanical disc brakes.
Compare the full range

MSRP$489
Weight32.0 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCE
Wheels27.5″ / 29″ Aluminum
Drivetrain3 × 7
GroupsetTourney, Altus
BrakesMechanical Disc
Where to Buy
Similar Bikes

For This Bike

Accessories
Top Comparison
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)

Sizing
XS

4'5" – 5'2"

SM

5'0" – 5'6"

MD

5'3" – 5'8"

MD/LG

5'5" – 5'11"

LG

5'9" – 6'3"

XL

6'1" – 6'6"

XXL

6'4" – 6'8"

Rider Fit Notes
  • 6'3", size XL, Just right
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

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

BB StandardBSA, 73mm, Threaded

Tire Clearance2.2"

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

VP BC73, 73mm, threaded cartridge

Headset

Semi-integrated, 1-1/8''

Stem

Size: XS, S, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: XS, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: S, M, 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

Handlebar

Size: XS, S, Bontrager alloy, 31.8mm, 15mm rise, 660mm width; 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, 27.2mm, 12mm offset, 330mm length; Size: XS, S, Bontrager alloy, 31.6mm, 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; 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

Shimano Tourney TY301, 42/34/24, 170mm 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

TypeMechanical Disc

Wheels
Rims

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

Spokes

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

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
Riders Also Viewed

Last updated July 17
Not listed for 1,371 days