Details
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.

Specs
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.