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2023 Trek

Marlin 5 Gen 2

A 27.5″ aluminum frame hardtail crosscountry bike with modest components.

Manufacturer Price

$449$739
Weight30.8 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCM
Wheels27.5″ Aluminum
Drivetrain2 × 8
GroupsetAltus
BrakesTektro Hydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Marlin 5 Gen 2
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)

25 mph

Marlin 5 Gen 2

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.

Price History
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

Escape Collective
Trek Marlin Gen 3 review: Good bones - Escape Collective

Apr 2024 · James Huang

Trek’s entry-level aluminum hardtail mountain bike.

Highs
  • Fantastic frame geometry

  • Excellent shifting

  • Good tires

  • Looks great

  • Generous tire clearance

  • Easy-to-live-with semi-internal routing

  • Sort of a rear thru-axle.

Lows
  • Mega-heavy fork with minimal adjustability

  • Tubeless costs extra

  • Limited upgrade potential.

Read Review

Bikerumor
Trek Upgrades Its Most Popular Bike: The Marlin

May 2023 · Andrew McLemore

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

Geometry
Specs
Build
Frame

Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR - XXS , XS , S : Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR; M , ML , L , XL , XXL : Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR

Tire Clearance2.2"

ColorRadioactive Red

Fork

SR Suntour XCM 30, coil spring, preload, hydraulic lockout, for 26'' wheel, 100mm QR, 100mm travel - XXS : SR Suntour XCM 30, coil spring, lockout, preload, 100 mm QR, 100 mm travel, 26" wheel; XS : SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel; S : SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel; M , ML , L , XL , XXL : SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel

Travel100mm

Spring TypeCoil

Bottom Bracket

Sealed cartridge, 73mm

Headset

Semi-integrated, 1-1/8"

Stem

Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 35 mm length - XXS : Bontrager Comp, 31.8 mm, 7-degree, 35 mm length; XS : Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length; S : Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length; M : Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length; ML , L : Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length; XL , XXL : Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 90 mm length

Handlebar

Bontrager Approved Lowriser, 31.8x690mm, 5mm Rise, 9D Bend/4D Upsweep, Black - XXS , XS : Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width; S , M , ML , L , XL , XXL : Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width

Saddle

Bontrager Arvada, steel rails, 138 mm width

Seatpost

Bontrager alloy, 31.6mm, 12mm offset, 300mm length - XXS : Bontrager alloy, 31.6 mm, 12 mm offset, 300 mm length; XS , S , M : Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length; ML , L , XL , XXL : Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length

TypeRigid

Groupset
Rear Derailleur

Shimano Altus M310

Front Derailleur

Shimano Altus M315, 34.9 mm clamp, top swing, dual pull

Crank

Prowheel CV10 Crankset, 36/22, 160mm length - XXS : Prowheel TM-CY10, 36/22, 160 mm length; XS , S , M : Shimano M315, 36/22, 170 mm length; ML , L , XL , XXL : Shimano M315, 36/22, 175 mm length

Shifters

Shimano Altus Shifter. Item Number: SL-M315-2L, 7-Speed, Rapidfire Plus, Inner Cable Length: 1800mm, With Optical Gear Display. (Visit si.shimano.com for compatibility, manuals and exploded views) - XXS , XS , S , M , ML , L , XL , XXL : Shimano M315, 2-speed; XXS , XS , S , M , ML , L , XL , XXL : Shimano M315, 8-speed

Cassette

Shimano 8-speed, 12-32T

Chain

KMC Z8.3, 8 speed

Brakes

Tektro HD-M275 hydraulic disc, 180 mm rotor

TypeTektro Hydraulic Disc

Wheels
Rims

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

Spokes

14 g stainless steel, black

Front Hub

Formula DC-20, alloy, 6-bolt, 100x5 mm

Rear Hub

Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm

Tires

Bontrager Tire XR2 Comp 26 x 2.20'' - XXS : Bontrager XR2 Comp, wire bead, 30 tpi, 26x2.20"; XS , S : Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"; M , ML , L , XL , XXL : Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"

Rider Notes
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First added August 15

Last updated June 7