TREK Marlin 4 Gen 2 2025
Model Year | 2025 |
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Options | Size: XS in 27.5; Colour: Matte Hex Blue; EXPECTED EARLY JANUARY 2025; CURRENTLY UNAVAILABLE Size: S in 27.5; Colour: Matte Hex Blue; SOLD OUT; CURRENTLY UNAVAILABLE Size: M in 29; Colour: Matte Hex Blue; CURRENTLY UNAVAILABLE Size: M/L in 29; Colour: Matte Hex Blue; CURRENTLY UNAVAILABLE Size: L in 29; Colour: Matte Hex Blue; CURRENTLY UNAVAILABLE Size: XL in 29; Colour: Matte Hex Blue; CURRENTLY UNAVAILABLE Size: XXL in 29; Colour: Matte Hex Blue; CURRENTLY UNAVAILABLE Size: XS in 27.5; Colour: Dnister Black; EXPECTED EARLY JANUARY 2025; CURRENTLY UNAVAILABLE Size: S in 27.5; Colour: Dnister Black; EXPECTED EARLY JANUARY 2025; CURRENTLY UNAVAILABLE Size: M in 29; Colour: Dnister Black; CURRENTLY UNAVAILABLE Size: M/L in 29; Colour: Dnister Black; CURRENTLY UNAVAILABLE Size: L in 29; Colour: Dnister Black; CURRENTLY UNAVAILABLE Size: XL in 29; Colour: Dnister Black; CURRENTLY UNAVAILABLE Size: XXL in 29; Colour: Dnister Black; CURRENTLY UNAVAILABLE Size: XS in 27.5; Colour: Crimson; SOLD OUT; CURRENTLY UNAVAILABLE Size: S in 27.5; Colour: Crimson; SOLD OUT; CURRENTLY UNAVAILABLE Size: M in 29; Colour: Crimson; CURRENTLY UNAVAILABLE Size: M/L in 29; Colour: Crimson; CURRENTLY UNAVAILABLE Size: L in 29; Colour: Crimson; CURRENTLY UNAVAILABLE Size: XL in 29; Colour: Crimson; CURRENTLY UNAVAILABLE Size: XXL in 29; Colour: Crimson; AVAILABLE TO ORDER FROM SUPPLIER |
Style | Marlin takes its cue from light, fast XC bikes. The right wheel size for each frame size, performance pedigree and an unbeatable ride feel make Marlin the perfect trail rider. 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 mechanical disc brakes and a suspension fork that takes the edge off bumps and rough terrain. Highlights: - XC light, mountain tough: Alpha Silver Aluminium frame is race light, mountain strong, and ride tuned for peak performance. The new frame features sleek tube shapes and clean internal routing for all cables and hoses including both derailleurs and rear brake. - Versatile: built in mounts make it easy to add a rack and mudguards if you want to. - Lifetime warranty: built to last, the Marlin is backed by Trek's limited lifetime warranty. - Shifting is handled by Shimano's reliable 2x7 speed Tourney gearing. - All-weather Tektro mechanical (cable) disc brakes. - Terrain-smoothing SR Suntour forks. - The right fit: available in a wide range of eight frame sizes, ranging from XS to XXL, there's a Marlin for anyone, at any height. This is the widest size range in the industry. Smart Wheel Size ensures every rider gets the fastest wheel that fits. ![]() Extra small and small frames have 27.5" wheels, short-reach brake levers and narrower handlebars that make it easier for riders with smaller hands to stay in control. Medium and above frame sizes have 29" (29er) wheels. The 29ers gain from Trek's vast experience with bigger wheel sizes, and feature advanced frame geometry and a custom offset fork to give you brilliant handling: precise at low speed without compromising high-speed stability. The right wheel size paired with your frame size gives you the perfect combination of responsiveness and control. Everyone wins. Next model up: Marlin 5 Gen 3 Sizing Guide ![]() N.B. This chart can be made bigger by opening the image in a new tab |
Frame | Alpha Silver Aluminium, internal derailleur, dropper post and brake routing, chainstay brake mount, rack and kickstand mount. Lifetime warranty. |
Forks | SR Suntour XCE 28, coil spring, preload, QR, 100mm travel (XS: 80mm travel) |
Rear Derailleur | Shimano Tourney TY300 |
Front Derailleur | Shimano Altus M315 |
Shifters | Shimano Altus EF500, 2x7 speed |
Chainset | ProWheel TM-CY10, 2x7 (36/22) |
Bottom Bracket | VP BC73, 73mm, sealed threaded cartridge |
Chain | KMC Z7 |
Freewheel | Shimano TZ500, 14-34, 7 speed |
Headset | 1 1/8" threadless, semi-integrated |
Stem | Bontrager alloy, Blendr-compatible (mounts available for Bontrager lights and Bontrager and Garmin computers), 31.8mm, 7 degree |
Handlebars | Bontrager alloy, 31.8mm, 5mm rise (XS-S), 15mm rise (M-XXL) |
Front Brake | Tektro MD-M280 mechanical disc, 160mm rotor |
Rear Brake | Tektro MD-M280 mechanical disc, 160mm rotor |
Brake Levers | Tektro MD-M280 |
Rims | Bontrager Connection 32 hole double-walled, 20mm width |
Front Hub | Formula DC20 alloy, 6-bolt, 5x100mm QR |
Rear Hub | Formula DC-31, alloy, freewheel, 6-bolt, 135x5mm QR |
Tyres | Bontrager XR2 Comp, 27.5x2.2" / 29x2.2" |
Saddle | Bontrager Verse Short, stainless steel rails |
Seatpost | Bontrager alloy, 2-bolt head, 31.6mm, 12mm offset |
Pedals | VP-536 nylon platform |
Grips | Bontrager XR Endurance Comp, lock-on |
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.