Features /

4 Series takes its cue from light, fast XC bikes. Dialed geometry, race-inspired tech, and unbeatable ride feel make this an excellent platform for trail riders on a budget.

Upgrades from 4300

  • XCR-RL fork w/remote lockout
  • Shimano Deore/SLX 10-speed drivetrain
  • Shimano M522 crank
  • Bontrager AT-850 double-walled rims
  • Bontrager Race Lite stem

Alpha Gold Aluminum

Trek’s high-performance aluminum, with manipulated tube shapes to balance strength and weight saving.

Remote lockout

Handlebar-mounted controls let you lock out your suspension on the fly as you switch terrains.

Extended size range

A wider range of sizes than the industry standard provides more option for everyone, from tallest to shortest and all those in between. Because everyone deserves a great ride.

Hydraulic disc brakes

Ultimate control and stopping power in all conditions, including wet and muddy.

Oversize stem and handlebar

31.8mm oversize clamp diameter increases stiffness for more confident, precise handling.

Internal derailleur routing

Route your derailleur cables through the frame to keep your bike running smooth and clean.

Suspension fork

Shock-absorbing fork allows the front wheel to travel up and down over bumps while the handlebars stay steady, for a comfortable, controlled ride.

Rack & fender mounts

Built-in mounts make it easy to add racks and fenders for added versatility.