By Trek

Trek Marlin 4 Gen 2 27.5 Bike 2025 Matte Hex Blue


$749.99

Klarna financing available on orders $2,000+

Size

Gender: Unisex
Season: Spring/Summer 2025

Bike Delivery

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Trek’s Marlin 4 Gen 2 blends dependable trail performance with everyday versatility, making it a solid choice for riders new to mountain biking or commuting on mixed terrain. Built with a lightweight Alpha Silver Aluminum frame, SR Suntour suspension, and mechanical disc brakes, it delivers responsive control and comfort on both rail trails and technical singletrack. Integrated rack and fender mounts, plus a Shimano 14-speed drivetrain, extend utility for gear-hauling and daily rides.

Specs

*Frame Alpha Silver Aluminum, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR (XS/S) / Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR (M/ML/L/XL)
*Fork SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel (XS) / SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel (S) / SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel (M/ML/L/XL)
Max compatible fork travel 100mm (XS & S: 490mm axle-to-crown, M & up: 509mm axle-to-crown)
Hub front Formula DC-20, alloy, 6-bolt, 5x100mm QR
Hub rear Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR
Skewer rear 152x5mm QR
Rim Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes 14g stainless steel, black
*Tire Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20'' (XS/S) / Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20'' (M/ML/L/XL)
Max tire size Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer
*Shifter Shimano EF500, 8 speed / Shimano EF500, 7 speed
Front derailleur Shimano Altus M315, 34.9mm clamp, top swing, dual pull
Rear derailleur Shimano Tourney TY300
*Crank ProWheel TM-CY10, 36/22, 170mm length (XS/S/M) ProWheel TM-CY10, 36/22, 175mm length (M/ML/L)
Bottom bracket VP BC73, 73mm, threaded cartridge
Cassette Shimano TZ500, 14-34, 7 speed
Chain KMC Z7, 7 speed
Pedal VP-536 nylon platform
Max chainring size 1x: See FAQ, 2x: 36T, 3x: 42T
Saddle Bontrager Verse Short, stainless steel rails
*Seatpost Bontrager alloy, 31.6mm, 12mm offset, 330mm length (XS/S) 360mm (M) 400mm (ML/L/XL)
*Handlebar Bontrager alloy, 31.8mm, 5mm rise, 690mm width (XS/S) / Size: M , ML , L , XL Bontrager alloy, 31.8mm, 15mm rise, 750mm width (M/ML/L/XL)
Grips Bontrager XR Endurance Comp, lock-on
*Stem Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length (XS/S) 60mm (M) 70mm (ML/L) 80mm
Headset Semi-integrated, 1-1/8''
*Brake Tektro MD-M280 mechanical disc / Tektro MD-M281 mechanical disc / Tektro MD-M280 mechanical disc, 160mm rotor / Tektro MD-M281 mechanical disc, 160mm rotor
*Brake rotor Tektro wave, 6-bolt, 160mm (XS/S/M/ML/L/XL) / Tektro, 6-bolt, 160mm
Rotor size Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer
Weight M - 14.60 kg / 32.19 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

Information provided by manufacturer