01
Alpha Silver Aluminum
The aluminum frame provides a durable foundation for trail riding, recreational cycling and everyday use.
Marlin 4 Gen 3 Mountain Bike - Black
£419.00
In stock, ready to ship
Trek Marlin 4 Gen 3
Built for the trail.
Built for the trail.
Ready for more.
A capable hardtail mountain bike designed for everyday riding, rail trails, gravel paths and off-road adventures.
100 mm
Front Suspension
8-Speed
Shimano Drivetrain
Hydraulic
Disc Brakes
14.9 kg
Listed Weight
One bike for roads, trails and everything between.
The Trek Marlin 4 Gen 3 combines an Alpha Silver Aluminum frame with front suspension, hydraulic disc brakes and an 8-speed Shimano drivetrain. It is built to give riders a practical, versatile platform for recreational mountain biking and everyday riding.
Built to ride
Trail capability without unnecessary complexity.
A practical combination of suspension, gearing, braking and frame features gives the Marlin 4 a versatile riding character.
02
100 mm Suspension
The SR Suntour XCE 28 fork provides up to 100 mm of travel to help smooth out uneven terrain and trail bumps.
03
Hydraulic Disc Brakes
Hydraulic disc brakes provide controlled braking performance across different riding conditions and terrain.
04
8-Speed Shimano
The 8-speed Shimano drivetrain provides a straightforward range of gears for climbs, flats and everyday riding.
05
Internal Routing
Internal cable routing keeps the frame appearance clean while helping protect cables from external exposure.
06
Rack & Mudguard Mounts
Practical mounting points add versatility for commuting, utility riding and longer recreational rides.
Front-end control
Smooth out the rough stuff.
The SR Suntour XCE 28 suspension fork gives the Marlin 4 up to 100 mm of front travel, helping take the edge off rougher surfaces and uneven trails.
- Up to 100 mm of front suspension travel
- SR Suntour XCE 28 fork
- Suspension lockout for smoother surfaces
- Designed for recreational trail riding
Confidence where it matters
Control the ride.
From rough trails to smoother roads, the Marlin 4's front suspension helps give the front wheel additional control when the surface becomes uneven.
- SR Suntour XCE 28 suspension fork
- Up to 100 mm front travel
- Suspension lockout
- Built for mixed recreational riding
Rider-focused design
A frame designed around the rider.
Marlin's frame design combines practical mounting points, internal routing and size-specific features for a versatile setup.
Smart Wheel Sizing
Wheel size is matched to frame size, helping create a more appropriate riding setup across the Marlin size range.
Practical Frame Details
Internal routing, rack mounts and compatibility with mudguards give the Marlin 4 useful versatility beyond the trail.
Simple. Capable. Ready.
Gears for the ride ahead.
The 8-speed Shimano drivetrain provides a practical selection of gears for climbs, flatter sections and everyday cycling.
- 8-speed Shimano drivetrain
- Simple gear selection
- Suitable for trail and recreational riding
- Practical for everyday cycling
Grip & stopping control
Built for changing terrain.
Wide trail-oriented tyres and hydraulic disc brakes give the Marlin 4 the equipment needed for a mixture of paved and off-road riding.
Trail-Ready Tyres
Bontrager Montrose Comp tyres provide a versatile setup for paved surfaces, gravel paths and recreational trail riding.
Hydraulic Braking
Hydraulic disc brakes provide controlled braking performance, helping you manage descents, corners and everyday stops.
Marlin 4 Gen 3
Clean design. Practical details. Trail-ready character.
The Marlin 4 keeps its profile clean with internal routing while retaining the practical features needed for everyday use.
Find your fit
The right fit starts with Smart Wheel Sizing.
Marlin uses different wheel sizes across the frame range. This allows the bike to maintain an appropriate wheel setup as frame dimensions change.
| Frame Size | Wheel Size |
|---|---|
| XS | 27.5" |
| S | 27.5" |
| M | 29" |
| M/L | 29" |
| L | 29" |
| XL | 29" |
| XXL | 29" |
Technical details
Specifications
Key product specifications for the Trek Marlin 4 Gen 3.
Frame
Alpha Silver Aluminum
Fork
SR Suntour XCE 28 suspension fork
Front Travel
Up to 100 mm
Drivetrain
Shimano 8-speed
Brakes
Hydraulic disc brakes
Tyres
Bontrager Montrose Comp
Cable Routing
Internal
Rack Mounts
Yes
Mudguard Compatibility
Yes
Suspension Lockout
Yes
Listed Weight
14.9 kg / 32.85 lb, size M
Colour
Black
Sizes
XS, S, M, M/L, L, XL, XXL
Questions
Marlin 4 Gen 3 FAQ
What type of riding is the Marlin 4 designed for?
The Marlin 4 is designed as an entry-level mountain bike for
recreational trail riding, rail trails, gravel paths and
everyday cycling.
Does the Marlin 4 have front suspension?
Yes. The bike uses an SR Suntour XCE 28 suspension fork with
up to 100 mm of front travel and a suspension lockout.
How many gears does the Marlin 4 have?
The Marlin 4 Gen 3 uses an 8-speed Shimano drivetrain.
Does the Marlin 4 have hydraulic disc brakes?
Yes. The Marlin 4 Gen 3 is equipped with hydraulic disc brakes.
Does it have rack mounts?
Yes. The frame includes rack mounts, adding versatility for
commuting and carrying everyday equipment.
Is the Marlin 4 compatible with mudguards?
Yes. The Marlin 4 Gen 3 is designed with mudguard compatibility
for riders who want additional protection in wet conditions.
What sizes are available?
The available size range includes XS, S, M, M/L, L, XL and XXL.
How much does the Marlin 4 weigh?
The listed weight is 14.9 kg / 32.85 lb for size M. Actual
weight can vary depending on frame size and configuration.
Get outside.
Ride further.
The Trek Marlin 4 Gen 3 combines practical trail capability, dependable components and everyday versatility in one capable hardtail mountain bike.
Marlin 4 Gen 3 Mountain Bike - Black
Black / XS
£419.00