Trek Marlin 5 – Built for Everyday Adventures, On or Off the Road

The Trek Marlin 5 is a versatile mountain bike designed for riders who want a reliable companion for both city streets and light trail adventures. With trail-ready features, a comfortable riding position, and practical mounting options, it’s the perfect choice for commuting, fitness, and weekend explorations.

Perfect for you if...

You want a rugged bike that feels at home commuting through the city during the week and exploring gravel paths or forest trails on the weekend. You’re looking for a comfortable, stable ride with reliable components, all in a package that’s budget-friendly and beginner-ready.

What you get

• Frame: Lightweight Alpha Silver Aluminum with internal cable routing, rack and kickstand mounts, and modern trail geometry for confidence and control

• Fork: Coil-spring suspension fork with 100mm travel — absorbs bumps on gravel, cobblestones, and light trails

• Drivetrain: Shimano CUES 9-speed system with LINKGLIDE technology — designed for durability and smooth, consistent shifting

• Brakes: Shimano hydraulic disc brakes for confident stopping power in all weather conditions

• Wheels & Tires: 27.5" or 29" wheels (depending on size) paired with grippy, multi-surface tires for stability and versatility

• Accessory Mounts: Ready for a rear rack, fenders, and a kickstand — making it ideal for commuters or utility use

Frame

• Size XS: Alpha Silver Aluminum, curved top tube, internal cable routing for rear derailleur and dropper post, mounts for rack and kickstand, ThruSkew 135x5mm

• Sizes ML, M, L, S, XL, XXL: Alpha Silver Aluminum, internal cable routing for rear derailleur and dropper post, mounts for rack and kickstand, ThruSkew 135x5mm

Fork

• Size XS: SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 80 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

• Sizes ML, M, L, XL, XXL: SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 29" wheel, 100 mm QR, 100 mm travel

Wheels

• Front hub (all sizes): Formula DC-20, alloy, 6 bolts, 5x100mm QR

• Front skewer (all sizes): Thru-Skew Trek

• Rear hub (all sizes): Formula DC-22, alloy, 6 bolts, Shimano 8/9/10 freewheel, 135x5mm QR

• Rear skewer (all sizes): QR 173x5mm

• Rim (all sizes): Bontrager Connection, double wall, 32 holes, 20mm width, Schrader valve

• Spokes (all sizes): Stainless steel 14g, black

• Tires:

  • XS, S: Bontrager Montrose Comp, rigid bead, 30tpi, 27.5x2.40"

  • ML, M, L, XL, XXL: Bontrager Montrose Comp, rigid bead, 30tpi, 29x2.40"

Drivetrain

• Shifter (all sizes): Shimano U4000, 9 speed

• Rear derailleur (all sizes): Shimano CUES U4000

• Crankset:

  • ML, M, XS, S: Shimano CUES U4001, 32T, 52mm chainline, 170mm length

  • L, XL, XXL: Shimano CUES U4001, 32T, 52mm chainline, 175mm length

• Bottom bracket (all sizes): Shimano, 73mm, threaded cartridge, 122.5mm spindle

• Cassette (all sizes): Shimano LINKGLIDE LG300, 11-46, 9 speed

• Chain (all sizes): Shimano LG500

• Pedals (all sizes): Nylon platform VP-536

Components

• Saddle (all sizes): Bontrager Verse Short, stainless steel rails

• Seatpost:

  • M, XS, S: Bontrager alloy, 31.6mm, 12mm offset, 330mm length

  • ML, L, XL, XXL: Bontrager alloy, 31.6mm, 12mm offset, 400mm length

• Handlebar:

  • XS: Bontrager alloy, 31.8mm, 5mm rise, 690mm width

  • S: Bontrager alloy, 31.8mm, 15mm rise, 720mm width

  • ML, M, L, XL, XXL: Bontrager alloy, 31.8mm, 15mm rise, 750mm width

• Grips (all sizes): Trek Line Comp, nylon lock-on

• Stem:

  • XS, S: Bontrager Comp, 31.8mm, 7°, 35mm length

  • ML, M, L: Bontrager Comp, 31.8mm, Blendr compatible, 7°, 50mm length

  • XL: Bontrager Comp, 31.8mm, Blendr compatible, 7°, 60mm length

  • XXL: Bontrager Comp, 31.8mm, Blendr compatible, 7°, 70mm length

• Headset (all sizes): Semi-integrated, 1-1/8"

• Brake:

  • ML, M, L, XL, XXL: Shimano MT200 hydraulic disc brake

• Brake rotors:

  • ML, M, XS, L, S, XL, XXL: Shimano RT26, 6 bolts, 160mm

  • ML, M, L, XL, XXL: Shimano RT26, 6 bolts, 180mm

• Brake set (all sizes): Shimano MT200 hydraulic disc brake

Why you’ll love it

• A true all-rounder — handles pavement, gravel, and trails with ease
• Confident handling thanks to updated trail geometry
• Mounting points for racks and fenders increase versatility for commuting or bikepacking
• Internal cable routing gives it a clean look and protects cables from dirt and moisture
• A perfect entry-level MTB that feels like a serious ride without a serious price

We reserve the right to make changes to the product information on the website at any time without notice, including details related to equipment, specifications, models, colors, materials, and prices. Due to supply chain issues, compatible parts may be replaced at any time without prior notice.

The listed bicycle and frame weights refer to pre-production painted models at the time of publication. The final product weight may vary.