The new JEFFSY 29 is easy rolling, efficient, stable and not in the least sluggish. The reason is the well balanced geometry with short chainstays that places you in the center of the bike. This way you’ll make optimal use of the big wheels, and you’ll be surprised at just how agile this 29er is. The large contact patch of the tire provides impressive grip and efficient traction, which you will enjoy on longer adventures as well as in uneven terrain. At the same time, the big wheel keeps you on track even on rough and technical trails and provide you with a sense of security as the speed picks up.
With 140 mm of travel, not only can you and JEFFSY 29 rack up the kilometers but you’ll happily step out together in the bike park as well. V4L suspension technology is supple off the top and supports you around the sag point, with enough pop and progressive travel reserves to make sure you don’t bottom out needlessly even on bigger jumps. The result: JEFFSY lets you truly redefine your riding style.
The JEFFSY 29 CF Pro boasts impressive specifications: the progressive feel of the 140 mm RockShox Pike RCT3 and the RockShox Deluxe RT3 shock ensures you have full control even during big impacts, providing enough travel reserve to deal with fast and rough downhill sections.
SRAM’s wide range GX Eagle drive train offers 12 gears and with 10–50 teeth on the cassette you can tackle both steep climbs and high-speed descents with ease. Because it’s never about pure speed but rather perfect speed, SRAM’s Guide RS brakes give you precise control and reliable stopping power, while e*thirteen‘s TRSr tires deliver superior traction and rolling speed.
FrameJEFFSY CARBON 29"
high modular carbonfiber frame, V4L Virtual 4-Link rear suspension, 148x12mm DT Swiss QR Thru axle, down tube/seat stay/chain stay protection
CranksetSRAM GX Eagle
175mm | 34T | DUB
Wheelsete*thirteen TRS Plus
27,5“ x 28mm | 110x15mm | 148x12mm
ForkRockShox Pike RCT3
27,5“ | 150mm | 15x110mm | 46mm Rake
Rear DerailleurSRAM GX Eagle
Front Tiree*thirteen TRS Plus
27,5" | 2.35
RT3 | 230x60mm
ShifterSRAM GX Eagle
Rear Tiree*thirteen TRS Plus
27,5" | 2.35
Travel front/rear140mm / 140mm
Bottom BracketSRAM DUB Pressfit
ChainSRAM GX Eagle
StemRace Face Turbine R 35
CassetteSRAM XG-1275 Eagle
10-50T | 12-Speed
BrakesSRAM Guide RS
ROTOR CENTERLINE | 200mm / 180mm
Weight*13,0 kg / 28,7 lb
* Weight measured without pedals in smallest frame size available. Due to manufacturing tolerances of the individual components the bike weight may differ +/- 5%
Seatposte*thirteen TRS Plus
31.6mm | S 125mm Drop | M - XL 150mm Drop | XXL 170mm Drop
Pedalsincluded / inklusive
The included pedals were not made for demanding trails or racing. That is why we also offer you quality pedals at an attractive price in the shopping cart.
HandlebarRace Face Turbine R 35
35mm Rise | 800mm
SaddleSDG FLY MTN Cutout
YT Custom | Red | White
Tool KitIceToolz Set
Torque Wrench (3NM-10NM; 3-6mm, reset) | Shock Pump (330psi/20.6bar; pressure relief valve) | Allen Key | Anti-Slip Paste
GripsODI Elite Motion
V2.1 | Lock On
Frame SizeS / M / L / XL / XXL
ColorMAGNESIUM WHITE / BLACK MAGIC
MAGNESIUM WHITE / BLACK MAGIC
CANDY RED / WHITE
For an even better ride feel, the new JEFFSY 29 has a significantly longer reach than its predecessor and on the CF Pro Race model we also gave it 10 mm more travel. The seat tube angle has been made steeper for a more ergonomic seated position, so that even taller riders end up in the center of the bike and can fully benefit from the slack headangle. To apply YT’s Tailor Made concept also to the new JEFFSY 29, we’ve significantly shortened the seat tube and introduced an XXL size. This gives you the choice between two or even three frame size in order to adapt the reach measurement to your riding style and preferences.
To ensure consistent handling across the frame sizes, we’ve made the chainstays longer on the XL and XXL. The now even slacker headangle has a calming effect on the bike and gives you more control when things get steeper and faster. This is also exactly the point where the longer reach makes itself known, helping JEFFSY stay on track and making sure even taller riders can sit “in” the bike. The integrated Flip Chip lets you further adapt the bike’s geometry to suit your technique and terrain. Run it in the low position to slacken the headangle and lower the BB for fast and rough terrain, or switch to the high position to raise the BB for better clearance and more fun on the climbs.
|A Toptube length||571 mm||592 mm||614 mm||637 mm||659 mm|
|B Reach||434 mm||454 mm||474 mm||494 mm||514 mm|
|C Stack||615 mm||620 mm||624 mm||633 mm||638 mm|
|D Seattube length||400 mm||415 mm||435 mm||460 mm||485 mm|
|E Chainstay length||435 mm||435 mm||435 mm||440 mm||440 mm|
|F Headtube angle||66,5 / 67 °||66,5 / 67 °||66,5 / 67 °||66,5 / 67 °||66,5 / 67 °|
|G Seattube angle (eff.)||77,5 / 78 °||77,5 / 78 °||77,5 / 78 °||77,5 / 78 °||77,5 / 78 °|
|H BB Drop||35 / 27 mm||35 / 27 mm||35 / 27 mm||35 / 27 mm||35 / 27 mm|
|I Wheelbase||1171 mm||1193 mm||1215 mm||1244 mm||1266 mm|
|J Headtube length||100 mm||105 mm||110 mm||120 mm||125 mm|
|K BB height||341 / 349 mm||341 / 349 mm||341 / 349 mm||341 / 349 mm||341 / 349 mm|