3 Series

The trail starts here


3 Series is your weekend trail bike, your workday commuter, or both. Versatility, great suspension, smart spec… it's no wonder 3 Series is the world's best-selling mountain bike.

Can't decide between a trail bike and a commuter? Get both, in one bike. 3 Series gives you upright confidence, control, and road-to-trail versatility, wherever you ride.

  1. Light, tough frame Trail-ready Alpha Aluminum frame is rack and fender ready for daily practicality.

  2. Perfect fit Our extended size range guarantees a better fit, so you get a better ride.

  3. Quality components Shimano drivetrains and Bontrager components mean smooth shifting and performance you can count on over the long haul.

  4. Limited lifetime warranty These bikes are built to last, and backed by Trek's limited lifetime warranty.