Trek Marlin 5 Gen 3
Built To Take You Further.
A versatile hardtail mountain bike designed to build confidence on the trail and stay capable when the ride moves beyond it. The Marlin 5 Gen 3 combines a lightweight aluminium frame, 100mm suspension, hydraulic disc brakes and a smooth 9-speed drivetrain in one ready-for-anything package.
One Bike For Trails, Roads And Everything In Between.
The Marlin 5 Gen 3 is designed around versatility. Its trail-oriented geometry, suspension fork and wide MTB tyres give you confidence on uneven ground, while rack and kickstand mounts make it practical for everyday riding too.
Alpha Silver Aluminium
A lightweight aluminium frame with internal routing and integrated mounts for practical everyday versatility.
100mm Suspension
The SR Suntour XCT 30 fork helps absorb bumps and maintain control across uneven trails and rougher surfaces.
Shimano CUES 9-Speed
A wide-range 9-speed drivetrain gives you practical gearing for climbs, rolling terrain and everyday riding.
Lightweight. Capable. Ready For The Trail.
The Alpha Silver Aluminium frame gives the Marlin 5 a strong, practical foundation without unnecessary complexity.
- Alpha Silver Aluminium construction
- Internal derailleur routing
- Internal dropper-post routing
- Rack mounts
- Kickstand mounts
- 135 × 5mm ThruSkew rear axle
Stay In Control When The Surface Gets Rough.
The SR Suntour XCT 30 suspension fork uses a coil spring, preload adjustment and hydraulic lockout with 100mm of travel on the relevant 29-inch frame sizes.
That combination gives the Marlin a more controlled and comfortable ride when the route leaves smooth pavement behind.
Simple, Smooth And Ready For The Climb.
Shimano CUES gives the Marlin 5 a practical 9-speed setup with an 11–46T LINKGLIDE cassette, giving you useful gearing for climbs, descents and changing terrain.
Trail-Ready Cockpit
A wide Bontrager alloy handlebar, Trek lock-on grips and practical trail-focused controls keep the riding position stable and comfortable.
Built For Everyday Versatility
Rack and kickstand mounts make the Marlin useful beyond the trail, giving you more options for commuting, errands and everyday riding.
Confident Stopping. Trail After Trail.
Shimano MT200 hydraulic disc brakes deliver controlled braking performance with the consistency you want when speeds change quickly or the terrain becomes technical.
- Shimano MT200 hydraulic disc brakes
- Shimano RT26 160mm brake rotor
- 6-bolt rotor mounting
- Hydraulic braking front and rear
More Grip. More Stability. More Confidence.
High-volume Bontrager tyres provide the contact and traction needed for mixed terrain, while the double-wall Bontrager Connection rims provide a practical foundation for everyday trail riding.
- Bontrager Montrose Comp tyres
- 29 × 2.40" on M–XXL
- 27.5 × 2.40" on XS–S
- Bontrager Connection double-wall rims
- 32-hole wheel construction
Find The Right Frame Size.
Marlin 5 Gen 3 Specifications
Frequently Asked Questions
What type of bike is the Trek Marlin 5 Gen 3?
The Marlin 5 Gen 3 is a hardtail mountain bike designed for trail riding, everyday cycling and mixed-terrain use.
Does the Marlin 5 have suspension?
Yes. It uses an SR Suntour XCT 30 coil-spring suspension fork with preload adjustment and hydraulic lockout. The 29-inch frame sizes use 100mm of front travel.
How many gears does the Marlin 5 Gen 3 have?
The bike uses a Shimano CUES U4000 9-speed drivetrain with an 11–46T Shimano LINKGLIDE cassette.
Does it have hydraulic disc brakes?
Yes. The DoorstepDrip specification lists Shimano MT200 hydraulic disc brakes with Shimano RT26 160mm rotors.
Does the Marlin 5 use 29-inch wheels?
Wheel size depends on frame size. Trek's current Smart Wheel Sizing uses 27.5-inch wheels on XS and S, and 29-inch wheels from M through XXL.
What rider height is suitable for size M?
Trek lists size M for riders approximately 165–177cm tall.
What rider height is suitable for size L?
Trek lists size L for riders approximately 177–188cm tall.
Can the Marlin 5 be used for commuting?
Yes. Its versatile frame includes mounts for a rack and kickstand, making it practical beyond trail riding.
Does the frame have internal cable routing?
Yes. The Alpha Silver Aluminium frame uses internal routing for the rear derailleur and dropper post.
How much does the Marlin 5 weigh?
DoorstepDrip lists the approximate weight at 15kg for a size M frame.
Ride More. Explore Further.
From first trail rides to everyday adventures, the Trek Marlin 5 Gen 3 gives you the control, versatility and capability to keep pushing your riding forward.