2023 Trek

Marlin 8 Gen 3

A 26″ / 27.5″ / 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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Manufacturer Price

$1,299
Weight31.5 lbs  
FrameAluminum
SuspensionHardtail, 80mm
ForkRockShox Judy Silver TK
Wheels26″ / 27.5″ / 29″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle
BrakesHydraulic Disc
SeatpostDropper
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Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Marlin 8 Gen 3
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)

24 mph

Marlin 8 Gen 3

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
14.5"

4'8" – 5'2"

15.5"

5'0" – 5'6"

Rider Fit Notes

None yet.

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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

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
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Size: XXS, XS, Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew; Size: S, M, ML, L, XL, Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew

BB StandardBSA, 73mm, Threaded

Tire Clearance2.4"

Fork

Size: XXS, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: XS, S, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel

Travel80mm

Spring TypeAir

Bottom Bracket

Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle

Headset

Semi-integrated, 1-1/8''

Stem

Size: XXS, XS, S, Bontrager Comp, 31.8mm, 7 degree, 35mm length; Size: M, ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: XL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length

Handlebar

Size: XXS, XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, Bontrager alloy, 31.8mm, 15mm rise, 720mm width; Size: M, ML, L, XL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width

Saddle

Bontrager Arvada, steel rails, 138mm width

Seatpost

Size: XXS, XS, S, TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length; Size: M, TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length; Size: ML, L, XL, TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length

TypeDropper

Pedals

VP-536 nylon platform

Grips

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

SRAM SX Eagle

Crank

Size: XXS, SRAM SX Eagle, 30T steel ring, 49mm chainline, 155mm length; Size: XS, S, M, SRAM SX Eagle, 30T steel ring, 49mm chainline, 170mm length; Size: ML, L, XL, SRAM SX Eagle, 30T steel ring, 49mm chainline, 175mm length

Shifters

SRAM SX Eagle, 12 speed

Cassette

SRAM PG-1210 Eagle, 11-50, 12 speed

Chain

SRAM SX Eagle, 12 speed

Brakes

Shimano MT200 hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve

Front Hub

Formula DC-20 LW, alloy, 6-bolt, 5x100mm QR

Rear Hub

Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR

Tires

Size: XXS, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 26x2.40''; Size: XS, S, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.40''; Size: M, ML, L, XL, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40''

Disc Rotors

Size: XXS, XS, S, M, ML, L, XL, Shimano RT26, 6-bolt,160mm; Size: M, ML, L, XL, Shimano RT26, 6-bolt,180mm

Rider Notes
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Last updated June 15