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2026 Trek

Marlin Gen 3 Frameset

A 26″ / 27.5″ / 29″ aluminum frame crosscountry frameset.

Manufacturer Price

$549
Price History
FrameAluminum
Wheels26″ / 27.5″ / 29″
View on trekbikes.comLearn about Trek
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Where to Buy

$549

Trek logoTrek

Marlin Gen 3 Frameset

Available: XXS, XS, SM, MD, MD/LG, LG, XL, & XXL

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Insights
Sizing
13.5"

135cm – 146cm

14.5"

144cm – 156cm

15.5"

154cm – 166cm

17.5"

164cm – 177cm

18.5"

173cm – 180cm

19.5"

177cm – 189cm

21.5"

187cm – 196cm

23"

194cm – 203cm

Rider Fit Notes

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Price History
Reviews
99 Spokes
Trek Marlin Review

Jul 2025

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

Highs

  • Modern XC geometry

  • Clean aesthetics and internal cable routing

  • Shimano CUES drivetrain democratizes great shifting

Lows

  • Straight headtube, QR front hub, and “Thru-Skew” axle in the rear limit future upgrades

  • Wheels are not tubeless compatible

  • Heavy, poor performing 80 mm travel fork

Read 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.

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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.

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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

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

Tire Clearance: 2.4"

Color: Matte Dnister Black

Headset

Semi-integrated, 1-1/8''

Wheels
Tires

Frame: 29x2.40" (XXS: 26x2.40", XS & S: 27.5x2.40"), Fork: See manufacturer

Rider Notes
Riders Also Viewed

First added 1 July

Last updated 7 June