• All Mountain

CHOOSE YOUR WHEELSIZE

27.5" or 29" wheels – the choice is yours.

    .
  • JEFFSY Pro Race 29
  • JEFFSY Pro Race 29
  • .
  • JEFFSY Pro 29
  • JEFFSY Pro 29
  • .
  • JEFFSY Comp 29
  • JEFFSY Comp 29
  • .
  • JEFFSY Base 29
  • JEFFSY Base 29
  • .
  • DECOY Pro 29
  • DECOY Pro 29
  • .
  • DECOY Base 29
  • DECOY Base 29
  • JEFFSY Pro Race
  • JEFFSY Pro Race
  • JEFFSY Pro
  • JEFFSY Pro
  • JEFFSY Comp
  • JEFFSY Comp
  • JEFFSY Base
  • JEFFSY Base

As a true all-mountain bike, JEFFSY delivers convincing performance for everything from after-work rides and blasting your favorite single track to epic alpine crossings. Our versatile all-rounder is both an efficient climber and a playful companion for technical descending, high speeds and fun jumps. And JEFFSY features a bottle mount. So if you only have room for one bike in your garage, and that bike has to do it all, JEFFSY is your weapon of choice!

Bikefinder All Mountain

27,5"/ 29"

SIZE DOESN'T MATTER



Who's your JEFFSY?
JEFFSY 27 or JEFFSY 29? Depends on what you do with it! When choosing the right wheel size, consider your personal preferences, riding style and favorite terrain.

The JEFFSY 29
The JEFFSY 29 is one of the most aggressive and agile 29ers on the market. The big, 29-inch wheels are responsible for the significant BB drop, which leaves you sitting “in” the bike and feeling confident even when things get heavy. The big wheels also provide excellent traction and grip, while helping you rack up the miles on long rides. On fast descents, the big wheels keep things smooth and help the JEFFSY 29 stay on course even on rough tracks. It all adds up to a bike that is suitable for both rookies and experienced riders.

The JEFFSY 27
You like to play, get steezy and send every jump? In that case, the JEFFSY 27 is the perfect choice. The 27.5-inch wheels are stable, snappy and dynamic in turns. Because the JEFFSY 27 really likes airtime, we’ve given it 160 mm of front travel to ensure you have enough in reserve to really express yourself on the trails.

The JEFFSY is a versatile all-rounder with impressive climbing capabilities and the gravity DNA that all YT bikes share. Thanks to our award-winning V4L suspension technology, it is very sensitive off the top, with good mid-stroke support and plenty of end-stroke progressivity.

This gives the JEFFSY plenty of pop and agility in both the 27.5-inch and 29-inch versions. The JEFFSY wants you to pull up off every little lip, but it also has enough in reserve to give you a feeling of safety in rough terrain and on big jumps. And on the climbs, the ergonomic seated position and the high anti-squat give JEFFSY plenty of drive.

“The JEFFSY is an absolute rocket! This small travel all mountain bike with aggressive geo is fun and exciting no matter where you ride it.“