Trek Marlin 4 Gen 2 - 2025

It's right for you if...

You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop kerbs on the way to class.

The tech you get

A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes and a suspension fork that takes the edge off bumps and rough terrain.

The final word

The Marlin is made for any adventure. The rack and mudguard mounts make it a great choice for commuters who want to get a little rad on the way to class or the shops.

Why you'll love it

• The Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck
• Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter
• Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
• Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount
• Like every Trek, it's backed by a lifetime warranty

SPECS

FRAMESET

Frame:

- Size: XS , S | Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR

- Size: M , ML , L , XL , XXL | Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR

Fork:

- Size: XS | SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel

- Size: S | SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel

- Size: M , ML , L , XL , XXL | SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel

Max compatible fork travel: 100 mm (XS and S: 490 mm axle-to-crown, M and up: 509 mm axle-to-crown)

WHEELS

Hub front: Formula DC-20, alloy, 6-bolt, 5x100 mm QR

Hub rear: Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR

Skewer rear: 152x5 mm QR

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

Spokes: 14 g stainless steel, black

Tyre:

- Size: XS , S | Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"

- Size: M , ML , L , XL , XXL | Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"

Max tyre size: Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer

DRIVETRAIN

Shifter:

- Size: XS , S , M , ML , L , XL , XXL | Shimano EF500, 2-speed

- Size: XS , S , M , ML , L , XL , XXL | Shimano Altus EF500, 7-speed

Front derailleur: Shimano Altus M315, 34.9 mm clamp, top swing, dual pull

Rear derailleur: Shimano Tourney TY300

Crank:

- Size: XS , S , M | ProWheel TM-CY10, 36/22, 170 mm length

- Size: ML , L , XL , XXL | ProWheel TM-CY10, 36/22, 175 mm length

Bottom bracket: VP BC73, 73 mm, threaded cartridge

Cassette: Shimano TZ500, 14-34, 7-speed

Chain: KMC Z7, 7-speed

Pedal: VP-536 nylon platform

Max. chainring size: 1x/2x: 34T, 3x: 42T

COMPONENTS

Saddle: Bontrager Verse Short, stainless steel rails

Seatpost:

- Size: XS , S | Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length

- Size: M | Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length

- Size: ML , L , XL , XXL | Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length

Handlebar:

- Size: XS , S | Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width

- Size: M , ML , L , XL , XXL | Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width

Grips: Bontrager XR Endurance Comp, lock-on

Stem:

- Size: XS , S | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length

- Size: M | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length

- Size: ML , L | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length

- Size: XL , XXL | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length

Head set: Semi-integrated, 1-1/8"

Brake:

- Size: XS , S , M , ML , L , XL , XXL | Power BH-M286TF hydraulic disc, 160 mm rotor

- Size: XS , S , M , ML , L , XL , XXL | Tektro MD-M280 mechanical disc

- Size: XS , S , M , ML , L , XL , XXL | Tektro MD-M281 mechanical disc

- Size: L , XL , XXL | Power BH-M286TF hydraulic disc, 180 mm rotor

Brake rotor: Tektro, 6-bolt, 160mm

Rotor size: Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer

WEIGHT

Weight: M - 14.60 kg / 32.19 lb

Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

The manufacturer reserves the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.