The 2025 Trek Marlin 5 Gen 3 in Matte Dnister Black is designed to give new riders a stable, confident and enjoyable introduction to real mountain biking. The updated Gen 3 geometry provides improved stability on descents while maintaining efficient climbing performance, making it a versatile bike for gravel paths, singletrack or commuting.

The lightweight Alpha Silver Aluminium frame features internal cable routing for a clean look, wider tyre clearance for added comfort and grip, and a tapered head tube for more precise steering control. A smooth shifting drivetrain ensures easy gear changes, while hydraulic disc brakes offer dependable stopping power in all weather conditions.

The Matte Dnister Black finish gives the bike a sleek, understated and premium look. Reliable, comfortable and ready for adventure, the Marlin 5 Gen 3 is a great choice for new riders and everyday cyclists, backed by the confidence of purchasing from an approved online Trek store.

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.

You're new to the trail and you’re looking for a real mountain bike that doubles as a commuter – and you want it all at an exceptional value.

A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, an upgraded 9-speed Shimano CUES drivetrain, a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes and a terrain-smoothing suspension fork with a lockout.

The Marlin 5 is a great ride for all your adventures. It's also versatile and a popular ride on college campuses because the rack and kickstand mounts make it easy to accessorise and haul a load.

The Marlin Gen 3 gives you serious trail capability, with big tyre clearance and slack, confidence-boosting geometry that keeps you stable from singletrack to city
Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter
Its ThruSkew system is safer, simpler and stronger, plus it makes removing the rear wheel easy for flat fixes in a hurry
Internal routing makes it easy to add a dropper post that lets you lower your saddle on the fly for more confident descending
Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount

SPECS

*Frame	Size: XXS , XS Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
*Frame	Size: S , M , L , XL , XXL Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
*Fork	Size: XXS SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 26'' wheel, 100 mm QR, 100 mm travel
	Size: XXS SR Suntour XCM 30, coil spring, lockout, preload, 100 mm QR, 100 mm travel, 26" wheel
	Size: XS SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
	Size: S SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
	Size: M , L , XL , XXL SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
Max compatible fork travel	120mm, XXS: 80mm

Wheels

Hub front	Formula DC-20, alloy, 6-bolt, 5x100 mm QR
Hub rear	Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR
Rim	Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
*Tyre	Size: XXS Bontrager XT3 Comp, wire bead, 30 tpi, 26x2.35"
	Size: XS , S Bontrager XT3 Comp, wire bead, 30 tpi, 27.5x2.40"
	Size: M , L , XL , XXL Bontrager XT3 Comp, wire bead, 30 tpi, 29x2.40"
Max tyre size	Frame: 29x2.40" (XXS: 26x2.40", XS & S: 27.5x2.40"), Fork: See manufacturer

Drivetrain

Shifter	Shimano U4000, 9-speed
Rear derailleur	Shimano CUES U4000
*Crank	Size: XXS , XS Prowheel C10Y-NW, 30T steel narrow-wide ring, 160 mm length
*Crank	Size: S , M , L , XL , XXL Prowheel C10Y-NW, 30T steel narrow-wide ring, 170 mm length
Cassette	Shimano LINKGLIDE LG300, 11-46, 9-speed
Chain	Shimano LG500
Pedal	VP-536 nylon platform
Max. chainring size	1x: 34T, 2x: 36/22

Components

*Seatpost	Size: XXS Bontrager alloy, 31.6 mm, 12 mm offset, 300 mm length
	Size: XS , S , M Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
	Size: L , XL , XXL Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
*Handlebar	Size: XXS , XS Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
	Size: S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width
	Size: M , L , XL , XXL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips	Bontrager XR Trail Comp, nylon lock-on
*Stem	Size: XXS , XS , S Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 35 mm length
	Size: M , L Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 50 mm length
	Size: XL Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length
	Size: XXL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length
Head set	Semi-integrated, 1-1/8"
Brake rotor	Tektro, 6-bolt, 160mm
*Brake Set	Size: XXS , XS , S Tektro HD-M276 hydraulic disc, short reach
*Brake Set	Size: M , L , XL , XXL Tektro HD-M275 hydraulic disc
Rotor size	Max brake rotor sizes - Frame: 180mm (XXS: 160mm), Fork: see fork manufacturer

Weight

Weight	M - 15.10 kg / 33.29 lbs (with tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

26” Mountain Bikes

2025 Trek Marlin 5 Gen 3 - Matte Dnister Black