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2026 Marlin 5 Gen 3 Hardtail Mountain Bike

$849.99
SKU: TRE28574800E  |  Barcode: 197216263401
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  • Will my bike have a curved top tube?

    Will my bike have a curved top tube?

    Smaller frames have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frame sizes have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

  • Fit for every rider

    Fit for every rider

    Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.

  • High tech, high value

    High tech, high value

    Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements.

  • Shimano CUES

    Shimano CUES

    Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette, and chainrings.

  • A better way to produce aluminum

    A better way to produce aluminum

    Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.

  • Shimano LINKGLIDE

    Shimano LINKGLIDE

    LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting – along with a great pedalling experience. Available exclusively on Shimano CUES drivetrains.

  • Upgrade your pedals and love your bike more

    Upgrade your pedals and love your bike more

    Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

Overview

Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. It features a trail-savvy frame with a suspension fork, 9-speed Shimano CUES shifting, and mounts for a rack and kickstand that make it an ideal choice for trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike.

Technical Specifications

*frame Size: XS Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkewSize: S , M , ML , L , XL , XXL Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
*fork Size: XS SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5'' wheel, 100 mm QR, 80 mm travelSize: S SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5'' wheel, 100 mm QR, 100 mm travelSize: M , ML , L , XL , XXL SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 29'' wheel, 100 mm QR, 100 mm travel
Hub front Formula DC-20, alloy, 6-bolt, 100x5mm
Skewer front Trek Thru-Skew
Hub rear Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
Skewer rear 173x5mm QR
Rim Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes 14g stainless steel, black
*tire Size: XS , S Bontrager Montrose Comp, wire bead, 30 tpi, 27.5x2.4''Size: M , ML , L , XL , XXL Bontrager Montrose Comp, wire bead, 30 tpi, 29x2.4''
Shifter Shimano U4000, 9 speed
Rear derailleur Shimano CUES U4000
*crank Size: XS , S , M , ML Shimano CUES U4001, 32T, 52mm chainline, 170mm lengthSize: L , XL , XXL Shimano CUES U4001, 32T, 52mm chainline, 175mm length
Bottom bracket Shimano, 73mm, threaded cartridge, 122.5mm spindle
Cassette Shimano LINKGLIDE LG300, 11-46, 9 speed
Chain Shimano LG500, 9/10/11 speed
Pedal VP-536 nylon platform
Saddle Bontrager Verse Short, stainless steel rails
*seatpost Size: XS , S , M Bontrager alloy, 31.6mm, 12mm offset, 330mm lengthSize: ML , L , XL , XXL Bontrager alloy, 31.6mm, 12mm offset, 400mm length
*handlebar Size: XS Bontrager alloy, 31.8mm, 5mm rise, 690mm widthSize: S Bontrager alloy, 31.8mm, 15mm rise, 720mm widthSize: M , ML , L , XL , XXL Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Trek Line Comp, nylon lock-on
*stem Size: XS , S Bontrager Comp, 31.8mm, 7 degree, 35mm lengthSize: M , ML , L Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm lengthSize: XL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm lengthSize: XXL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
Headset Semi-integrated, 1-1/8''
Brake Shimano MT200 hydraulic disc
*brake rotor Size: XS , S , M , ML , L , XL , XXL Shimano RT26, 6-bolt, 160mmSize: M , ML , L , XL , XXL Shimano RT26, 6-bolt, 180mm
Brake set Shimano MT200 hydraulic disc
Weight M - 15.10 kg / 33.29 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

Parts are subject to change without notice. Chat with us if you have any questions.

Geometry

Bike geometry diagram

All measurements provided in cm unless otherwise noted.

Frame size number 14.5"15.5"17.5"18.5"19.5"21.5"23"
Frame size letter XSSMMLLXLXXL
Wheel size 27.5"27.5"29"29"29"29"29"
A — Seat tube 34.037.041.944.447.052.155.9
B — Seat tube angle (degrees)73.8°73.8°71.9°71.9°71.9°71.9°71.9°
Effective seat tube angle (degrees)74.0°74.0°73.0°73.0°73.0°73.0°73.0°
C — Head tube length 9.010.09.09.010.012.012.0
D — Head angle (degrees)66.5°66.5°69.5°69.5°69.5°69.5°69.5°
E — Effective top tube 55.157.960.261.863.865.967.3
F — Bottom bracket height 31.331.331.031.031.031.031.1
G — Bottom bracket drop 4.54.55.85.85.85.85.8
H — Chainstay length 43.343.343.843.843.843.843.8
I — Offset 4.24.24.24.24.24.24.2
J — Trail 11.011.09.39.39.39.39.3
K — Wheelbase 109.2112.1110.0111.6113.7115.9117.3
L — Standover 65.869.274.875.875.776.980.4
M — Frame reach 39.041.541.843.445.146.648.0
N — Frame stack 56.357.260.260.261.163.063.0

This Geometry Chart is provided by the Manufactuer. Chat with us if you have any questions.

Sizing

sizeinchescm
XS4'9" - 5'1"145 - 155
S5'1" - 5'5"155 - 165
M5'5" - 5'10"165 - 177
ML5'8" - 5'11"173 - 180
L5'10" - 6'2"177 - 188
XL6'2" - 6'5"188 - 195
2XL6'5" - 6'8"195 - 203

Sizing to be used as a reference only. Chat with us if you have any questions.

Marlin 5 Gen 3
Trek

2026 Marlin 5 Gen 3 Hardtail Mountain Bike

From $849.99
Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. It features a trail-savvy frame with a suspension fork, 9-speed Shimano CUES shifting, and mounts for a rack and kickstand that make it an ideal choice for trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike.

Color

Size

  • XS (27.5" wheel)
  • S (27.5" wheel)
  • M (29" wheel)
  • ML (29" wheel)
  • L (29" wheel)
  • XL (29" wheel)
  • XXL (29" wheel)
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