TREK MARLIN 4 GEN 2 MTB BIKE 2025 MATTE HEX BLUE
Product Details - Trek Marlin 4 Gen 2 Mtb Bike 2025 Matte Hex Blue
Product Details - Trek Marlin 4 Gen 2 Mtb Bike 2025 Matte Hex Blue
This versatile hardtail delivers a great ride for all your adventures, but also doubles perfectly as a commuter bike so you can get the best of both worlds!
Key Features Trek Marlin 4 Gen 2 MTB Bike 2025
- SR Suntour suspension fork: For comfort and control.
- Mechanical disc brakes: For reliable stopping in all conditions.
- Shimano 14 speed gears: To get you up the steepest of hills.
Please Note: Marlin models in XXS, 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.
Full Specification
- Frame: Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
- Fork :SR Suntour XCE 28, coil spring, preload, 80 or 100 mm travel, depensing on wheel size
- Shifters: Shimano Altus EF500, 7-speed
- Chainset: ProWheel TM-CY10, 36/22, 170-175 mm length
- Cassette: Shimano TZ500, 14-34, 7-speed
- Chain: KMC Z7, 7-speed
- Front Derailleur: Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
- Rear Derailleur: Shimano Tourney TY300, long cage, 34T max cog
- Bottom Bracket: VP BC73, 73 mm, threaded cartridge
- Pedals: VP-536 nylon platform
- 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-27, alloy, 6-bolt, 7sp freehub, 135x5 mm QR
- Tyres: Bontrager XR2 Comp Size XS, S 27.5x2.2", Sizes M, ML, L, XL, XXL 29x2.2"
- Brakes: Tektro Mechanical disc, Tektro, 6-bolt rotor 160mm
- Handlebars: Bontrager alloy, 31.8 mm, 5 mm rise, 690-750 mm width
- Handlebar Grips: Bontrager XR Endurance Comp
- Headset: Semi-integrated, 1-1/8"
- Stem: Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree
- Saddle: Bontrager Verse Short, stainless steel rails
- Seatpost: Bontrager alloy, 31.6 mm, 12 mm offset
- Accessories: N/A
- Weight: M - 14.60 kg / 32.19 lbs
We reserve 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.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
Size Guide
Size Guide

How we Build & Pack Your Bike
How we Build & Pack Your Bike
Aftercare
Aftercare
At All Terrain Cycles, we want you to ride with confidence every time. To ensure your bike or e-bike stays in peak condition, here are some essential safety and maintenance tips.
Bicycle Safety
Always wear a helmet – Safeguard against head injuries by using a properly fitted, safety-certified helmet.
Perform pre-ride checks – Before each ride, verify that brakes, tyres, and gears are in good working order.
Stay visible – Utilise lights and reflective gear when cycling in low-light conditions.
Follow road rules – Ride responsibly and remain aware of your surroundings.
Aftercare for Your New Bike Initial Check-Up (First 50-100 miles)
Gear Adjustment – New cables may stretch slightly; have a qualified mechanic check and adjust them.
Brake & Wheel Check – Inspect brakes for wear and ensure wheels are aligned properly.
Lubrication – Apply chain oil and check bolt tightness to maintain smooth performance.
Tyre Pressure – Regularly monitor to prevent flats and enhance efficiency.
Routine Maintenance (Every Few Weeks)
Chain Care – Clean and lubricate your chain to minimise wear and prolong its life.
Brake Safety – Check brake pads and responsiveness before each ride.
Tyre Inspection – Look for punctures and ensure correct air pressure.
Handlebar & Stem Alignment – Confirm they are tight and secure to prevent instability.
Frame Safety Check – Look for any signs of damage or cracks.
Professional Check-Ups
Have your bike serviced at least once a year, or more frequently if you ride often.
Aftercare for Your New Electric Bicycle (e-Bike) Initial Check-Up (First 50-100 miles)
Battery Care – Fully charge your battery (if required) before the first ride and store it in a dry, moderate-temperature environment.
Avoid Overcharging – Unplug the charger once fully charged to extend battery life.
Routine e-Bike Maintenance (Every Few Weeks)
Motor Inspection – Listen for unusual noises and ensure smooth operation.
Battery & Connection Checks – Inspect cables and connectors for dirt, moisture, or damage.
Seasonal e-Bike Maintenance
Check Electrical Components – Ensure wires and connections are clean and secure.
Professional Servicing – Have your e-bike inspected at least once a year or every 500-1000 miles for optimal performance.
By following these aftercare guidelines, you’ll help ensure that your bicycle runs smoothly, lasts longer, and remains a joy to ride. Stay safe and enjoy the ride!
If you have any problems or concerns: Contact All Terrain Customer Services on 01274 588488 or email sales@allterraincycles.co.uk
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- SKU: 5301850
- EPOS Code:






Product Description
Product Description
This versatile hardtail delivers a great ride for all your adventures, but also doubles perfectly as a commuter bike so you can get the best of both worlds!
Key Features Trek Marlin 4 Gen 2 MTB Bike 2025
- SR Suntour suspension fork: For comfort and control.
- Mechanical disc brakes: For reliable stopping in all conditions.
- Shimano 14 speed gears: To get you up the steepest of hills.
Please Note: Marlin models in XXS, 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.
Full Specification
- Frame: Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
- Fork :SR Suntour XCE 28, coil spring, preload, 80 or 100 mm travel, depensing on wheel size
- Shifters: Shimano Altus EF500, 7-speed
- Chainset: ProWheel TM-CY10, 36/22, 170-175 mm length
- Cassette: Shimano TZ500, 14-34, 7-speed
- Chain: KMC Z7, 7-speed
- Front Derailleur: Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
- Rear Derailleur: Shimano Tourney TY300, long cage, 34T max cog
- Bottom Bracket: VP BC73, 73 mm, threaded cartridge
- Pedals: VP-536 nylon platform
- 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-27, alloy, 6-bolt, 7sp freehub, 135x5 mm QR
- Tyres: Bontrager XR2 Comp Size XS, S 27.5x2.2", Sizes M, ML, L, XL, XXL 29x2.2"
- Brakes: Tektro Mechanical disc, Tektro, 6-bolt rotor 160mm
- Handlebars: Bontrager alloy, 31.8 mm, 5 mm rise, 690-750 mm width
- Handlebar Grips: Bontrager XR Endurance Comp
- Headset: Semi-integrated, 1-1/8"
- Stem: Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree
- Saddle: Bontrager Verse Short, stainless steel rails
- Seatpost: Bontrager alloy, 31.6 mm, 12 mm offset
- Accessories: N/A
- Weight: M - 14.60 kg / 32.19 lbs
We reserve 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.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
Size Guide
Size Guide

How to Build Your Bike
How to Build Your Bike
Aftercare
Aftercare
At All Terrain Cycles, we want you to ride with confidence every time. To ensure your bike or e-bike stays in peak condition, here are some essential safety and maintenance tips.
Bicycle Safety
Always wear a helmet – Safeguard against head injuries by using a properly fitted, safety-certified helmet.
Perform pre-ride checks – Before each ride, verify that brakes, tyres, and gears are in good working order.
Stay visible – Utilise lights and reflective gear when cycling in low-light conditions.
Follow road rules – Ride responsibly and remain aware of your surroundings.
Aftercare for Your New Bike Initial Check-Up (First 50-100 miles)
Gear Adjustment – New cables may stretch slightly; have a qualified mechanic check and adjust them.
Brake & Wheel Check – Inspect brakes for wear and ensure wheels are aligned properly.
Lubrication – Apply chain oil and check bolt tightness to maintain smooth performance.
Tyre Pressure – Regularly monitor to prevent flats and enhance efficiency.
Routine Maintenance (Every Few Weeks)
Chain Care – Clean and lubricate your chain to minimise wear and prolong its life.
Brake Safety – Check brake pads and responsiveness before each ride.
Tyre Inspection – Look for punctures and ensure correct air pressure.
Handlebar & Stem Alignment – Confirm they are tight and secure to prevent instability.
Frame Safety Check – Look for any signs of damage or cracks.
Professional Check-Ups
Have your bike serviced at least once a year, or more frequently if you ride often.
Aftercare for Your New Electric Bicycle (e-Bike) Initial Check-Up (First 50-100 miles)
Battery Care – Fully charge your battery (if required) before the first ride and store it in a dry, moderate-temperature environment.
Avoid Overcharging – Unplug the charger once fully charged to extend battery life.
Routine e-Bike Maintenance (Every Few Weeks)
Motor Inspection – Listen for unusual noises and ensure smooth operation.
Battery & Connection Checks – Inspect cables and connectors for dirt, moisture, or damage.
Seasonal e-Bike Maintenance
Check Electrical Components – Ensure wires and connections are clean and secure.
Professional Servicing – Have your e-bike inspected at least once a year or every 500-1000 miles for optimal performance.
By following these aftercare guidelines, you’ll help ensure that your bicycle runs smoothly, lasts longer, and remains a joy to ride. Stay safe and enjoy the ride!
If you have any problems or concerns: Contact All Terrain Customer Services on 01274 588488 or email sales@allterraincycles.co.uk
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