Trek Marlin 4 Gen 3 - Nearly New - M 2026 - Hardtail MTB Bike
This Marlin 4 Gen 3 - Nearly New - M mountain bike is rated as an Excellent Grade which reflects that the bike is in very good condition and can be considered to have been 'pre-pedalled'. Having been lightly used, there are some signs of use on the bike. The only minor visible marks are on the handlebar, fork lower, down tube and crank arm. This bike has had upgraded Tektro brakes fitted.
To ensure this bike meets our high standards for quality, it has undergone a thorough inspection by our professional mechanics. As with all our bikes, it comes with a 12-month Tredz warranty, plus any additional manufacturer warranty which may apply.
The Trek Marlin 4 Gen 3 brings a fresh feel to an MTB favourite, with trail-capable geometry and practical features that suit riders of all levels. Built around a redesigned Alpha Silver Aluminium frame, the Marlin 4 gains a longer, slacker shape that gives it extra stability and confidence when descending or cornering, whether you're exploring forest tracks or navigating urban backroads.
Key Features:
- Alpha Silver Aluminium frame with internal cable routing and trail-inspired geometry
- SR Suntour XCE 28 coil fork with 100 mm travel
- Shimano ESSA U2000 8-speed drivetrain with ProWheel chainset
- Tektro HD-M275 hydraulic disc brakes front and rear
- 29"/27.5" Bontrager Connection wheels with Montrose Comp tyres
- Rack and kickstand mounts for commuter versatility
- Available with 0% APR finance
Up front, the SR Suntour XCE 28 fork offers 100 mm of suspension travel with a coil spring and adjustable preload, helping to smooth out bumps and rough patches on the trail. Shimano’s 8-speed ESSA U2000 rear derailleur teams up with a wide-range 11-45T cassette, giving you enough gearing to spin up steep climbs and cruise flats with ease. The ProWheel narrow-wide chainring adds chain security on uneven ground.
Tektro HD-M275 hydraulic disc brakes give you strong and reliable stopping power—ideal for mixed-weather riding or varied terrain. Bontrager Montrose Comp tyres wrap around robust double-wall Bontrager Connection rims, delivering grip and support without weighing you down. Depending on size, the Marlin 4 rolls on either 29" or 27.5" wheels to suit rider fit and handling preferences.
What makes the Marlin 4 especially versatile is the inclusion of rack and kickstand mounts, so you can easily adapt it for commuting, carrying gear or day-to-day errands. The frame is also dropper post ready, giving you the option to upgrade for even more control on the descents.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew |
| Fork | SR Suntour XCE 28, coil spring, preload, 100 mm QR |
| Front Brake | Tektro HD-M275 hydraulic disc // Tektro HD-M275 hydraulic disc |
| Rear Brake | Tektro HD-M275 hydraulic disc // Tektro HD-M275 hydraulic disc |
| Rear Mech | Shimano ESSA U2000 |
| Speed | 8 |
| Rims | Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve |
| Front Hub | Formula DC-20, alloy, 6-bolt, 5x100 mm QR |
| Rear Hub | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR |
| Front Tyre | Bontrager Montrose comp, wire bead, 30 tpi |
| Rear Tyre | Bontrager Montrose comp, wire bead, 30 tpi |
| Saddle | Bontrager Verse Short, stainless steel rails |
| Chainset | ProWheel alloy, 32T narrow-wide steel ring |
| Chain | KMC Z8.3, 8-speed |
| Cassette | Shimano HG300, 11-45, 8-speed |
Typical Bike Size Chart
|
Height
|
Bike Size
|
Road Bike Size
|
Mountain Bike Size *
|
|
4’8” – 5’1”
143 – 155 cm
|
XXS
|
44 cm
|
13” (33 cm)
|
|
5’1” – 5’4”
155 – 163 cm
|
XS
|
48 cm
|
15” (38 cm)
|
|
5’4” – 5’7”
163 – 170 cm
|
S
|
51 cm
|
16” (41 cm)
|
|
5’7” – 5’10”
170 – 178 cm
|
M
|
54 cm
|
18” (46cm)
|
|
5’10” – 6’0”
178 – 183 cm
|
L
|
56 cm
|
19” (48cm)
|
|
6’0” – 6’3”
183 – 191 cm
|
XL
|
58 cm
|
20” (51 cm)
|
|
6’3” – 6’5”
191 – 196 cm
|
XXL
|
60 cm
|
21” (53 cm)
|
|
6’5” – 6’9”
196 – 205 cm
|
XXXL
|
62 cm
|
22” (56 cm)
|
* Mountain bikes are sized differently to road bikes. Typically, they are sized in inches as the first MTBs were produced in the USA. European brands like Lapierre and Haibike like to use centimetres for all their bikes. The measurements of their mountain bikes doesn’t match their road bikes but are like a simple conversion from the inches measurement. This is why we have included cm measurements in brackets for the Mountain bike column.
Read our bike size guide for more information on sizing.
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Trek Marlin 4 Gen 3 - Nearly New - M 2026 - Hardtail MTB Bike
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At Tredz, if you are not 100% happy with your order, then you can use our simple hassle free returns service. Simply return the item new and unused in the manufacturers original packaging within 90 days of purchase. Bikes and larger items are collected by courier.
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
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