Trek Marlin 4

Trek Marlin 4
  • Color: Matte Viper Red
  • Color: Matte Viper Red
  • Color: Trek Black
  • Color: Trek Black
Please select options


Fishing for a great ride is easy with Trek's Marlin. Its super-light aluminum frame features the ideal geometry to deliver superior cornering, climbing, and descending. A set of go-fast knobbies keep you glued to the trail, and a 75mm-travel fork smooths the bumps, steering you through the roughest terrain. Plus, component highlights include a 21-speed Shimano drivetrain, a host of reliable Bontrager parts, and mechanical disc brakes that give you stopping power in all conditions.

Trek’s Smart Wheel Size

Smaller frame sizes are designed around 27.5-inch wheels, while medium and larger sizes are designed around 29-inch wheels. This ensures every rider gets the perfect combination of speed and handling, regardless of rider size.

Trek's Smart Wheel Size


Frame Trek Alpha Silver aluminum
Fork SR Suntour M-3030, 75mm-travel
Rims/Wheels Bontrager AT-550
Hubs Formula
Tires Bontrager XR2: Front: 29 x 2.2; Rear: 29 x 2.0 (13.5/15.5 Frame: 27.5 x 2.2)
Crankset Shimano Tourney
Chainrings 42/34/24
Bottom Bracket Sealed cartridge, English thread
Chain KMC X51
Front Derailleur Shimano Tourney
Rear Derailleur Shimano Tourney
Rear Cogs Shimano, 7-speed: 14-28
Shifters Shimano Altus EF51
Handlebars Bontrager riser
Tape/Grips Bontrager Satellite Plus
Stem Bontrager alloy
Brake Levers Shimano
Brakes Tektro alloy linear pull
Pedals Wellgo nylon platform
Saddle Bontrager Evoke 1
Seatpost Bontrager SSR, 12mm offset

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Matte Viper Red / 13.5-inch (27.5 wheels) 601479451067 532224
Matte Viper Red / 15.5-inch (27.5 wheels) 601479451074 532225
Matte Viper Red / 17.5-inch (29 wheels) 601479451098 532227
Matte Viper Red / 18.5-inch (29 wheels) 601479451104 532228
Matte Viper Red / 19.5-inch (29 wheels) 601479451111 532229
Matte Viper Red / 21.5-inch (29 wheels) 601479451128 532230
Matte Viper Red / 23-inch (29 wheels) 601479451135 532231
Trek Black / 13.5-inch (27.5 wheels) 601479451227 532240
Trek Black / 15.5-inch (27.5 wheels) 601479451234 532241 MAR23882962K
Trek Black / 17.5-inch (29 wheels) 601479451258 532243
Trek Black / 18.5-inch (29 wheels) 601479451265 532244
Trek Black / 19.5-inch (29 wheels) 601479451272 532245
Trek Black / 21.5-inch (29 wheels) 601479451289 532246
Trek Black / 23-inch (29 wheels) 601479451296 532247