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 Disc

  • Shimano Alivio/Deore drivetrain
  • Shimano M395 hydraulic disc brakes

Alpha Gold Aluminium

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

26" wheels

The MTB standard for versatility, light weight, and maneuverability.

Internal derailleur routing

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

Oversized stem and handlebar

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

Rack & mudguard mounts

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

Hydraulic disc brakes

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

Extended size range

Many Trek models feature a wider range of sizes than the industry standard, to give a better fit to more riders.

Remote lockout

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

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.

9 speed

Performance-oriented gearing for performance-oriented bikes and riders.

Trail Ready

Trail Ready means this frame is certified for off-road use.