NZD 5,299.00

usually: NZD 5,799.00

includes import tax & duty

  • S
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  • M
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  • L
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  • XL
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JEFFSY is ready to be your new bro and wingman. You’re going to be the new dream team. Whether on your home trails or crossing high mountains, JEFFSY scales the toughest peaks with unbelievable drive and traction, and inspires you to unexpected performances. JEFFSY lets you discover the most remote locations, climb the highest peaks, and keep it pinned on the way back down. Because JEFFSY is the YT of All Mountain bikes, it won’t hold you back even in the roughest terrain. Thanks to its gravity oriented geometry JEFFSY remains agile and playful, even with the 29” wheels. And to meet our high design standards we gave JEFFSY super compact proportions – you two are going to get a lot of looks!

JEFFSY’s voluminous but light full carbon frame and its compact silhouette already have some observers doubting whether they are actually looking at a 29er. With its aggressive headtube angle, low stand over height and compact chain stays JEFFSY is a player among trail bikes, ready to go fast and get loose in the roughest of terrain. The length of the rear triangle comes optimized for each frame size and ensures a completely new and atypical handling for a 29er.

Thanks to the flip chip technology, JEFFSY’s geometry can be perfectly adapted to different terrain and to your style of riding. The low position gives you a more aggressive headtube angle and a bigger BB drop – perfect for quick and grimy downhill sections. The high position provides a smaller BB drop, so you can blast trails and tight turns with more ground clearance. Our prized Virtual 4 Link suspension technology is present on JEFFSY as well; sensitive, progressive, with lots of mid-travel support. This does not only give you the confidence needed for big gaps and rugged terrain but also makes pedaling a lot more efficient. The tube walls are thicker in critical areas to make sure the frame can handle the abuse, and integrated protectors keep the downtube and chain stays out of harm’s way when the action heats up.

With the JEFFSY CF Two you get a well-equipped trail bike with a 2x11 drivetrain that gives you a wider range of gears to shift through, so you have no more excuses on the next uphill section. This carbon bike comes with a complete Shimano XT group that is snappy and reliable, as well as a wide Race Face cockpit, a RockShox Reverb Stealth, and sturdy 2.4“ Onza Ibex tires mounted on TRS wheels from e*thirteen.


JEFFSY 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


e*thirteen TRS 29"

29", FW 15x100 Thru axle, RW 12x148 Thru Axle, Shimano Driver


RACE FACE Turbine 35

35mm clamp, 770mm wide, 35mm rise, 8° backsweep, 5° upsweep


Front Tire

Onza Ibex

29"x2,4", FRC 55a, 120 tpi



35mm clamp, 50mm (S/M), 60mm (L/XL)


Travel front/rear

140mm / 140mm

Rear Tire

Onza Ibex

29"x2,4", FRC 55a, 120 tpi


The Sensus Lite

Frame Size

S / M / L / XL

for the size that suits you best, please check the sizing-chart above



175mm, 26t/36t , BB92




IS41;28,6 | IS52;40, low cap, sealed headset, industrial bearings


13,2 kg / 29,1 lb

Rear Derailleur

Shimano XT

2x11, RD-M8000, Shadow Plus



RockShox Reverb Stealth

internal cable routing, S: 390 mm/125 mm travel  M , L, XL: 440mm / 150mm travel, 31,6 mm



RockShox Pike RCT3

air fork, solo air, Charger RCT3 damper cartridge, 3-position compression (low/mid/firm), low-speed compression, rebound, tapered steerer, 15x100 QR Thru axle, 140mm travel



Shimano XT

11-speed, 2-speed, SL-M8000




custom YT Logo


RockShox Monarch RT3

air shock, high volume air-can, 3 position compression (open, pedal, lock), external rebound, 7,875"x2,25"/ 200mmx57mm




11-speed, CF-M8000, 11t-40t



4-piston caliper, tool-free reach adjust, SwingLink lever, DOT 5.1






Bottom Bracket

Race Face BB92

Discs front/rear

SRAM Centerline 200mm / 180mm

Front Derailleur

Shimano XT

2x11, FD-M8020-E, e-type/S3


JEFFSY is exactly the right choice for extended trail rides, for the high alpine, for rocky, rooty terrain and rowdy descents. With tons of traction from the 29“ wheels JEFFSY takes you up any climb, and when it comes time to descend, the bigger wheels provide a smoother ride and better rollover capabilities. JEFFSY is a true weapon on the trail, with lots of gravity potential and appetite for the rough stuff. If your focus is on very aggressive riding and bike park days, you should take a look at our enduro beast, the CAPRA. Those who like to ride their JEFFSY often and hard should check it for damages after every ride, and comply with maintenance and service intervals. That’s the only way you’ll enjoy good times with your best friend for a long time.

Sizes   S   M   L   XL  
A Toptube length  571 mm 592 mm 616 mm 637 mm
B Reach  405 mm 425 mm 445 mm 465 mm
C Stack  605 mm 610 mm 623 mm 628 mm
D Seattube length  400 mm 440 mm 480 mm 520 mm
E Chainstay length  435 mm 435 mm 440 mm 440 mm
F Headtube angle low/high  67 / 67,5 ° 67 / 67,5 ° 67 / 67,5 ° 67 / 67,5 °
G Seattube angle (eff.) low/high  74,5 / 75 ° 74,5 / 75 ° 74,5 / 75 ° 74,5 / 75 °
H BB Drop low/high  32/24 mm 32/24 mm 32/24 mm 32/24 mm
I Wheelbase  1132 mm 1154 mm 1178 mm 1205 mm
J Headtube length  90 mm 95 mm 110 mm 115 mm
K Steerer tube length  551 mm 551 mm 551 mm 551 mm
L Fork offset  46 mm 46 mm 46 mm 46 mm

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.