2025 Trek Marlin 4 Gen 2 - Crimson
The 2025 Trek Marlin 4 Gen 2 in Crimson is a confidence inspiring entry level mountain bike built for new riders, students, commuters and anyone wanting a simple, durable and comfortable bike for everyday use. Its Gen 2 frame provides stable and predictable handling on gravel paths, neighbourhood roads and light trails, making it versatile enough for both fitness riding and daily transport.
The lightweight Alpha Silver Aluminium frame features modern internal cable routing and clean styling. A smooth shifting drivetrain keeps gear changes easy and reliable, while mechanical disc brakes offer consistent stopping power in all conditions. The relaxed geometry ensures a comfortable ride, even on longer outings.
Finished in a bold Crimson colourway, this model stands out with a strong, premium look. Ideal for riders looking for value, reliability and comfort, the Marlin 4 Gen 2 is backed by the confidence of purchasing from an approved online Trek store.
OVERVIEW
The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack. It's ideal for riders who want a mountain bike with knobby tyres that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting and mounts for a rack and mudguards make this a great bike for trail riders and campus commuters alike.
It's right for you if...
You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop kerbs on the way to class.
The tech you get
A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes and a suspension fork that takes the edge off bumps and rough terrain.
The final word
The Marlin is made for any adventure. The rack and mudguard mounts make it a great choice for commuters who want to get a little rad on the way to class or the shops.
Why you'll love it
The Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck
Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter (sold seperate)
Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
Marlin models in 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
Like every Trek, it's backed by a lifetime warranty
OVERVIEW
SPECS
*Please note – spec applies to all sizes unless listed separately
| *Frame |
Size: XS , S
Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR
|
|---|---|
|
Size: ML , M , L , XL , XXL
Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
|
|
| *Fork |
Size: XS
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
|
|
Size: S
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
|
|
|
Size: ML , M , L , XL , XXL
SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
|
| *Front Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-20, alloy, 6-bolt, 5x100 mm QR
|
|---|---|
| *Rear Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
|
| *Rear Skewer | Size: ML , M , XS , L , S , XL , XXL152x5 mm QR |
| *Rim |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
|
| *Spokes |
Size: ML , M , XS , L , S , XL , XXL
14 g stainless steel, black
|
| *Tire |
Size: XS , S
Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"
|
|
Size: ML , M , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"
|
|
| Max tyre size | Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer |
| *Shifter |
Size: ML , M , XS , L , S , XL , XXL
Shimano EF500, 2-speed
|
|---|---|
|
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus EF500, 7-speed
|
|
| *Front Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
|
| *Rear Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Tourney TY300
|
| *Crank |
Size: M , XS , S
ProWheel TM-CY10, 36/22, 170 mm length
|
|
Size: ML , L , XL , XXL
ProWheel TM-CY10, 36/22, 175 mm length
|
|
| *Bottom Bracket |
Size: ML , M , XS , L , S , XL , XXL
VP BC73, 73 mm, threaded cartridge
|
| *Cassette |
Size: ML , M , XS , L , S , XL , XXL
Shimano TZ500, 14-34, 7-speed
|
| *Chain |
Size: ML , M , XS , L , S , XL , XXL
KMC Z7, 7-speed
|
| *Pedal | Size: ML , M , XS , L , S , XL , XXLVP-536 nylon platform |
| Max. chainring size | 1x: See FAQ, 2x: 36T, 3x: 42T |
| *Saddle |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Verse Short, stainless steel rails
|
|---|---|
| *Seatpost |
Size: XS , S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
|
|
Size: M
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
|
|
|
Size: ML , L , XL , XXL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
|
|
| *Handlebar |
Size: XS , S
Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
|
|
Size: ML , M , L , XL , XXL
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
|
|
| *Grips |
Size: ML , M , XS , L , S , XL , XXL
Bontrager XR Endurance Comp, lock-on
|
| *Stem | Size: XS , SBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Size: MBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length | |
| Size: ML , LBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length | |
| Size: XL , XXLBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length | |
| *Headset |
Size: ML , M , XS , L , S , XL , XXL
Semi-integrated, 1-1/8"
|
| *Brake |
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc, 160 mm rotor
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc, 160 mm rotor
|
|
| *Brake Rotor |
Size: ML , M , XS , L , S , XL , XXL
Tektro wave, 6-bolt, 160 mm
|
| Rotor size | Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer |
| Weight | M - 14.60 kg / 32.19 lb |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
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.
Original: $579.92
-70%$579.92
$173.98More Images
2025 Trek Marlin 4 Gen 2 - Crimson
The 2025 Trek Marlin 4 Gen 2 in Crimson is a confidence inspiring entry level mountain bike built for new riders, students, commuters and anyone wanting a simple, durable and comfortable bike for everyday use. Its Gen 2 frame provides stable and predictable handling on gravel paths, neighbourhood roads and light trails, making it versatile enough for both fitness riding and daily transport.
The lightweight Alpha Silver Aluminium frame features modern internal cable routing and clean styling. A smooth shifting drivetrain keeps gear changes easy and reliable, while mechanical disc brakes offer consistent stopping power in all conditions. The relaxed geometry ensures a comfortable ride, even on longer outings.
Finished in a bold Crimson colourway, this model stands out with a strong, premium look. Ideal for riders looking for value, reliability and comfort, the Marlin 4 Gen 2 is backed by the confidence of purchasing from an approved online Trek store.
OVERVIEW
The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack. It's ideal for riders who want a mountain bike with knobby tyres that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting and mounts for a rack and mudguards make this a great bike for trail riders and campus commuters alike.
It's right for you if...
You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop kerbs on the way to class.
The tech you get
A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes and a suspension fork that takes the edge off bumps and rough terrain.
The final word
The Marlin is made for any adventure. The rack and mudguard mounts make it a great choice for commuters who want to get a little rad on the way to class or the shops.
Why you'll love it
The Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck
Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter (sold seperate)
Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
Marlin models in 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
Like every Trek, it's backed by a lifetime warranty
OVERVIEW
SPECS
*Please note – spec applies to all sizes unless listed separately
| *Frame |
Size: XS , S
Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR
|
|---|---|
|
Size: ML , M , L , XL , XXL
Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
|
|
| *Fork |
Size: XS
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
|
|
Size: S
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
|
|
|
Size: ML , M , L , XL , XXL
SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
|
| *Front Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-20, alloy, 6-bolt, 5x100 mm QR
|
|---|---|
| *Rear Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
|
| *Rear Skewer | Size: ML , M , XS , L , S , XL , XXL152x5 mm QR |
| *Rim |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
|
| *Spokes |
Size: ML , M , XS , L , S , XL , XXL
14 g stainless steel, black
|
| *Tire |
Size: XS , S
Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"
|
|
Size: ML , M , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"
|
|
| Max tyre size | Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer |
| *Shifter |
Size: ML , M , XS , L , S , XL , XXL
Shimano EF500, 2-speed
|
|---|---|
|
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus EF500, 7-speed
|
|
| *Front Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
|
| *Rear Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Tourney TY300
|
| *Crank |
Size: M , XS , S
ProWheel TM-CY10, 36/22, 170 mm length
|
|
Size: ML , L , XL , XXL
ProWheel TM-CY10, 36/22, 175 mm length
|
|
| *Bottom Bracket |
Size: ML , M , XS , L , S , XL , XXL
VP BC73, 73 mm, threaded cartridge
|
| *Cassette |
Size: ML , M , XS , L , S , XL , XXL
Shimano TZ500, 14-34, 7-speed
|
| *Chain |
Size: ML , M , XS , L , S , XL , XXL
KMC Z7, 7-speed
|
| *Pedal | Size: ML , M , XS , L , S , XL , XXLVP-536 nylon platform |
| Max. chainring size | 1x: See FAQ, 2x: 36T, 3x: 42T |
| *Saddle |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Verse Short, stainless steel rails
|
|---|---|
| *Seatpost |
Size: XS , S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
|
|
Size: M
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
|
|
|
Size: ML , L , XL , XXL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
|
|
| *Handlebar |
Size: XS , S
Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
|
|
Size: ML , M , L , XL , XXL
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
|
|
| *Grips |
Size: ML , M , XS , L , S , XL , XXL
Bontrager XR Endurance Comp, lock-on
|
| *Stem | Size: XS , SBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Size: MBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length | |
| Size: ML , LBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length | |
| Size: XL , XXLBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length | |
| *Headset |
Size: ML , M , XS , L , S , XL , XXL
Semi-integrated, 1-1/8"
|
| *Brake |
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc, 160 mm rotor
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc, 160 mm rotor
|
|
| *Brake Rotor |
Size: ML , M , XS , L , S , XL , XXL
Tektro wave, 6-bolt, 160 mm
|
| Rotor size | Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer |
| Weight | M - 14.60 kg / 32.19 lb |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The 2025 Trek Marlin 4 Gen 2 in Crimson is a confidence inspiring entry level mountain bike built for new riders, students, commuters and anyone wanting a simple, durable and comfortable bike for everyday use. Its Gen 2 frame provides stable and predictable handling on gravel paths, neighbourhood roads and light trails, making it versatile enough for both fitness riding and daily transport.
The lightweight Alpha Silver Aluminium frame features modern internal cable routing and clean styling. A smooth shifting drivetrain keeps gear changes easy and reliable, while mechanical disc brakes offer consistent stopping power in all conditions. The relaxed geometry ensures a comfortable ride, even on longer outings.
Finished in a bold Crimson colourway, this model stands out with a strong, premium look. Ideal for riders looking for value, reliability and comfort, the Marlin 4 Gen 2 is backed by the confidence of purchasing from an approved online Trek store.
OVERVIEW
The Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack. It's ideal for riders who want a mountain bike with knobby tyres that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting and mounts for a rack and mudguards make this a great bike for trail riders and campus commuters alike.
It's right for you if...
You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop kerbs on the way to class.
The tech you get
A lightweight aluminium frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes and a suspension fork that takes the edge off bumps and rough terrain.
The final word
The Marlin is made for any adventure. The rack and mudguard mounts make it a great choice for commuters who want to get a little rad on the way to class or the shops.
Why you'll love it
The Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck
Rack and mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter (sold seperate)
Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
Marlin models in 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
Like every Trek, it's backed by a lifetime warranty
OVERVIEW
SPECS
*Please note – spec applies to all sizes unless listed separately
| *Frame |
Size: XS , S
Alpha Silver Aluminium, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5 mm QR
|
|---|---|
|
Size: ML , M , L , XL , XXL
Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
|
|
| *Fork |
Size: XS
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
|
|
Size: S
SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
|
|
|
Size: ML , M , L , XL , XXL
SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
|
| *Front Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-20, alloy, 6-bolt, 5x100 mm QR
|
|---|---|
| *Rear Hub |
Size: ML , M , XS , L , S , XL , XXL
Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
|
| *Rear Skewer | Size: ML , M , XS , L , S , XL , XXL152x5 mm QR |
| *Rim |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
|
| *Spokes |
Size: ML , M , XS , L , S , XL , XXL
14 g stainless steel, black
|
| *Tire |
Size: XS , S
Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"
|
|
Size: ML , M , L , XL , XXL
Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"
|
|
| Max tyre size | Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer |
| *Shifter |
Size: ML , M , XS , L , S , XL , XXL
Shimano EF500, 2-speed
|
|---|---|
|
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus EF500, 7-speed
|
|
| *Front Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Altus M315, 34.9 mm clamp, top swing, dual pull
|
| *Rear Derailleur |
Size: ML , M , XS , L , S , XL , XXL
Shimano Tourney TY300
|
| *Crank |
Size: M , XS , S
ProWheel TM-CY10, 36/22, 170 mm length
|
|
Size: ML , L , XL , XXL
ProWheel TM-CY10, 36/22, 175 mm length
|
|
| *Bottom Bracket |
Size: ML , M , XS , L , S , XL , XXL
VP BC73, 73 mm, threaded cartridge
|
| *Cassette |
Size: ML , M , XS , L , S , XL , XXL
Shimano TZ500, 14-34, 7-speed
|
| *Chain |
Size: ML , M , XS , L , S , XL , XXL
KMC Z7, 7-speed
|
| *Pedal | Size: ML , M , XS , L , S , XL , XXLVP-536 nylon platform |
| Max. chainring size | 1x: See FAQ, 2x: 36T, 3x: 42T |
| *Saddle |
Size: ML , M , XS , L , S , XL , XXL
Bontrager Verse Short, stainless steel rails
|
|---|---|
| *Seatpost |
Size: XS , S
Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
|
|
Size: M
Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length
|
|
|
Size: ML , L , XL , XXL
Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
|
|
| *Handlebar |
Size: XS , S
Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
|
|
Size: ML , M , L , XL , XXL
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
|
|
| *Grips |
Size: ML , M , XS , L , S , XL , XXL
Bontrager XR Endurance Comp, lock-on
|
| *Stem | Size: XS , SBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Size: MBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length | |
| Size: ML , LBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length | |
| Size: XL , XXLBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length | |
| *Headset |
Size: ML , M , XS , L , S , XL , XXL
Semi-integrated, 1-1/8"
|
| *Brake |
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M280 mechanical disc, 160 mm rotor
|
|
|
Size: ML , M , XS , L , S , XL , XXL
Tektro MD-M281 mechanical disc, 160 mm rotor
|
|
| *Brake Rotor |
Size: ML , M , XS , L , S , XL , XXL
Tektro wave, 6-bolt, 160 mm
|
| Rotor size | Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer |
| Weight | M - 14.60 kg / 32.19 lb |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
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.
