JEFFSY 27 CF Pro Race

usually:  5,299.00€ 4,199.00€

Your discount: 1,100.00€

incl. VAT plus shipping costs

  • S
    sold out
  • M
    sold out
  • L
    sold out
  • XL
    sold out
  • XXL
    in stock

The new JEFFSY makes light work of both the climbs and the downhills. Every detail on the range-topping JEFFSY 27 CF Pro Race is designed for pure performance and the high-quality spec makes it the first choice for racers and experienced pro riders alike. With its potent 160 mm suspension package from FOX, generous reach and slack headangle it is ready to tackle any obstacle, which makes it particularly suitable for aggressive trail riding and enduro racing.

The V4L kinematics provide ample mid-stroke support and plenty of end-stroke progressivity, which explains JEFFSY’s appetite for jumping. The compact chainstays and the 27“ wheels give JEFFSY its playful character and help you navigate the tightest of turns with ease. To ensure consistent handling across all the frame sizes, we made the chainstays longer on the XL and XXL. The result: JEFFSY lets you truly redefine your riding style.

With a no-compromise component spec, the JEFFSY 27 CF Pro Race is the prime choice for racers and experienced pro riders alike. The FOX 36 Float Factory fork and FOX Float DPX2 Factory shock are extremely responsive and provide pro-level adjustment possibilities. The stiff TRSr crank gives the drive train a direct feel, while Shimano‘s crisp and precise XTR shifting ensures you are always in the right gear to put the power down on the trail.

The awesome modulation of SRAM‘s Guide RSC brakes helps you stay in control even on steep slopes and in tight turns, while the stiff Renthal Fatbar Carbon and Renthal Apex cockpit combo lets you steer your bike with confidence. FOX’s Kashima-coated Transfer Factory dropper post provides stepless height adjustment to let you put your saddle exactly where you need it to be.



high modular carbonfiber frame, V4L Virtual 4-Link rear suspension, 148x12mm DT Swiss QR Thru axle, down tube/seat stay/chain stay protection


e*thirteen TRS Race Carbon

175x73mm | 32T Boost


e*thirteen TRS Race

27,5“ x 31mm | 110x15mm | 148x12mm


FOX 36 Float Factory

160mm | Grip 2 | 15QRx110 | 44mm Rake

Rear Derailleur

Shimano XTR

Shadow Plus | 11-Speed

Front Tire

e*thirteen TRS Race

27,5" | 2.35


FOX Float DPX2 Factory

3pos-Adj | 230x65mm


Shimano XTR


Rear Tire

e*thirteen TRS Plus

27,5" | 2.35

Bottom Bracket

e*thirteen BB92



Shimano CN-HG601-11


Renthal Apex 35



e*thirteen TRS Plus

9-46T | 11-Speed


e*thirteen TRS Race SL

I05 2 bolt | 28-36T | Compact Slider


Acros AZX-203

High Cap



ROTOR CENTERLINE | 200mm / 180mm


12,7 kg / 28,0 lb

* Weight measured without pedals 2014 - 2019 models in frame size S / Regular | 2020 models in frame size L / Long. Due to manufacturing tolerances of the individual components the bike weight may differ +/- 5%



31.6mm | S 125mm Drop | M - XXL 150mm Drop


included / 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.


Renthal Fatbar Carbon 35

Gold | 30mm Rise | 800mm



YT Custom | Orange | Grey

Tool Kit

IceToolz Set

Torque Wrench (3NM-10NM; 3-6mm, reset) | Shock Pump (330psi/20.6bar; pressure relief valve) | Allen Key | Anti-Slip Paste


Renthal Traction


Frame Size

S / M / L / XL / XXL




Progress means change. In the case of the new JEFFSY 27, the changes are relatively small but the improvements are still noticeable. For an even better ride, we have given the new JEFFSY 27 longer reach and a slacker headangle. This has a calming effect on the bike and gives you more control when things get steeper and faster, the long reach helping JEFFSY stay on track and making sure even taller riders can sit “in” the bike.

To apply YT’s Tailor Made concept also to the new JEFFSY, 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, while 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.

Sizes   S   M   L   XL   XXL  
A Toptube length  567 mm 590 mm 613 mm 636 mm 660 mm
B Reach  422 mm 442 mm 462 mm 482 mm 502 mm
C Stack  598 mm 608 mm 617 mm 626 mm 635 mm
D Seattube length  395 mm 415 mm 435 mm 460 mm 485 mm
E Chainstay length  432 mm 432 mm 432 mm 437 mm 437 mm
F Headtube angle  65,5 / 66 ° 65,5 / 66 ° 65,5 / 66 ° 65,5 / 66 ° 65,5 / 66 °
G Seattube angle (eff.)   76,5 / 77 ° 76,5 / 77 ° 76,5 / 77 ° 76,5 / 77 ° 76,5 / 77 °
H BB Drop   13 / 6 mm 13 / 6 mm 13 / 6 mm 13 / 6 mm 13 / 6 mm
I Wheelbase  1167 mm 1191 mm 1215 mm 1244 mm 1268 mm
J Headtube length  110 mm 120 mm 130 mm 140 mm 150 mm
K BB height  344 / 352 mm 344 / 352 mm 344 / 352 mm 344 / 352 mm 344 / 352 mm

Warning! The maneuvers shown were done with professional riders on a closed course. Please do not attempt.

The bikes pictured may differ in certain details from the stock model and may feature optional equipment available at extra cost. Any information about delivery, appearance, dimensions and weights of bikes is provided without obligation and is subject to errors as well as printing and typing mistakes; furthermore we reserve the right to make any changes. No rights can be derived from incorrect information.