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ALL MOUNTAIN

Far out or nothing - with JEFFSY we have realized our very own definition of trail riding. JEFFSY is the YT among all mountain bikes, it's like your best friend for new top performances: together you climb the higher mountains, discover the most remote places and stamp downhill with full speed - JEFFSY and you, you are an unbeatable team

Choose Your Wheel Size

all-mountain
?
Wheels: 27 | 29
?
CF
?

Jeffsy Pro 29

S

M

L

XL

XXL

3,899.00 €

incl. VAT plus excl. Shipping

The JEFFSY PRO is equipped with carefully selected premium components to give you exactly the level of performance you want as a demanding rider. Fully adjustable suspension and durable parts for unlimted fun on your trails.

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  • Material

    Carbon

  • Suspension

    150mm

Tech + Specs
  • Frame

  • Flip chip

  • Protection

  • Bearings

  • Chainsuck

  • Headtube

  • Internal Cable Routing

  • Virtual Four Link

Frame

Flip chip

Situated at the lower shock mount, the Flip Chip makes it quick and easy to adjust the geometry according to the terrain and riding style. The low position provides for a more aggressive headtube angle and a bigger BB drop, ideal for fast and rough tracks. In the high position, the headtube angle is 0.5 degrees steeper and the BB is higher. The higher BB gives more ground clearance and better performance on longer steep climbs.

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Bearings

Extra seals protect the high-quality, double-sealed full complement bearings to keep water and dirt out and help prolong the service life.

Chainsuck

The inconspicuous chainsuck plates protect the frame from damage caused by a dropped chain. This keeps sensitive areas out of harm's way and helps prolong the frame's durability.

Headtube

The contact surfaces for the integrated headset are preformed directly in the carbon structure. The homogeneity of the material in this area creates the ideal balance of weight, durability and performance. The ZeroStack design with integrated bearings ensures a long service life.

Internal Cable Routing

For optimal protection, all cables are routed almost completely through the frame. Uninterrupted internal tubes provide for easy cable replacement and also help prevent unwanted noise. Small ridges ensure the cable plugs sit tight in the frame to seal the cable ports and a cable clamp holds them securely in place as they exit the frame under the rocker link.

Virtual Four Link

Our award-winning V4L suspension technology provides sensitivity off the top, with good mid-stroke support and plenty of end-stroke progressivity. The nice pop helps get the bike airborne whenever wanted, while the end-stroke progressivity makes sure the rear shock doesn't bottom out even on monster jumps. The high amount of anti-squat keeps the rear suspension neutral and improves pedal efficiency.

Flip chip

Flip chip

Situated at the lower shock mount, the Flip Chip makes it quick and easy to adjust the geometry according to the terrain and riding style. The low position provides for a more aggressive headtube angle and a bigger BB drop, ideal for fast and rough tracks. In the high position, the headtube angle is 0.5 degrees steeper and the BB is higher. The higher BB gives more ground clearance and better performance on longer steep climbs.

Protection

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Bearings

Bearings

Extra seals protect the high-quality, double-sealed full complement bearings to keep water and dirt out and help prolong the service life.

Chainsuck

Chainsuck

The inconspicuous chainsuck plates protect the frame from damage caused by a dropped chain. This keeps sensitive areas out of harm's way and helps prolong the frame's durability.

Headtube

Headtube

The contact surfaces for the integrated headset are preformed directly in the carbon structure. The homogeneity of the material in this area creates the ideal balance of weight, durability and performance. The ZeroStack design with integrated bearings ensures a long service life.

Internal Cable Routing

Internal Cable Routing

For optimal protection, all cables are routed almost completely through the frame. Uninterrupted internal tubes provide for easy cable replacement and also help prevent unwanted noise. Small ridges ensure the cable plugs sit tight in the frame to seal the cable ports and a cable clamp holds them securely in place as they exit the frame under the rocker link.

Virtual Four Link

Virtual Four Link

Our award-winning V4L suspension technology provides sensitivity off the top, with good mid-stroke support and plenty of end-stroke progressivity. The nice pop helps get the bike airborne whenever wanted, while the end-stroke progressivity makes sure the rear shock doesn't bottom out even on monster jumps. The high amount of anti-squat keeps the rear suspension neutral and improves pedal efficiency.

Toptube
Reach
Stack
Seattube
Chainstay
Headtube Angle
Seattube Angle (eff)
Seattube Angle (act)
bb drop
wheelbase
headtube
bb height
fork installment length
fork offset

s

m

l

xl

xxl

Toptube
572 mm
593 mm
615 mm
638 mm
660 mm
Reach
430 mm
450 mm
470 mm
490 mm
510 mm
Stack
618 mm
622 mm
627 mm
636 mm
640 mm
Seattube
400 mm
415 mm
435 mm
460 mm
485 mm
Chainstay
435 mm
435 mm
435 mm
440 mm
440 mm
Headtube Angle
66° / 66,5°
66° / 66,5°
66° / 66,5°
66° / 66,5°
66° / 66,5°
Seattube Angle (eff)
77° / 77,5°
77° / 77,5°
77° / 77,5°
77° / 77,5°
77° / 77,5°
Seattube Angle (act)
70,5° / 71°
70,5° / 71°
70,5° / 71°
70,5° / 71°
70,5° / 71°
bb drop
32 / 24 mm
32 / 24 mm
32 / 24 mm
32 / 24 mm
32 / 24 mm
wheelbase
1174 mm
1196 mm
1218 mm
1247 mm
1269 mm
headtube
100 mm
105 mm
110 mm
120 mm
125 mm
bb height
344 / 352 mm
344 / 352 mm
344 / 352 mm
344 / 352 mm
344 / 352 mm
fork installment length
557 mm
557 mm
557 mm
557 mm
557 mm
fork offset
44 mm
44 mm
44 mm
44 mm
44 mm
 

s

m

l

xl

xxl

Toptube
572 mm
593 mm
615 mm
638 mm
660 mm
Reach
430 mm
450 mm
470 mm
490 mm
510 mm
Stack
618 mm
622 mm
627 mm
636 mm
640 mm
Seattube
400 mm
415 mm
435 mm
460 mm
485 mm
Chainstay
435 mm
435 mm
435 mm
440 mm
440 mm
Headtube Angle
66° / 66,5°
66° / 66,5°
66° / 66,5°
66° / 66,5°
66° / 66,5°
Seattube Angle (eff)
77° / 77,5°
77° / 77,5°
77° / 77,5°
77° / 77,5°
77° / 77,5°
Seattube Angle (act)
70,5° / 71°
70,5° / 71°
70,5° / 71°
70,5° / 71°
70,5° / 71°
bb drop
32 / 24 mm
32 / 24 mm
32 / 24 mm
32 / 24 mm
32 / 24 mm
wheelbase
1174 mm
1196 mm
1218 mm
1247 mm
1269 mm
headtube
100 mm
105 mm
110 mm
120 mm
125 mm
bb height
344 / 352 mm
344 / 352 mm
344 / 352 mm
344 / 352 mm
344 / 352 mm
fork installment length
557 mm
557 mm
557 mm
557 mm
557 mm
fork offset
44 mm
44 mm
44 mm
44 mm
44 mm
sGeometry Sizefinder
S
154cm - 165cm | 5'0" - 5'4"
M
164cm - 175cm | 5'3" - 5'7"
L
174cm - 184cm | 5'7" - 6'0"
XL
183cm - 193cm | 6'0" - 6'3"
XXL
192cm - 202cm | 6'2" - 6'6"

This size table is only a suggestion. The optimal frame size depends also on your personal riding style.

Frame
Frame Size
Frame Size
 
M, L, XL, XXL
Color
Color
 
ghostship green,
black magic
Wheels
Wheels
RockShox Pike Select +
 
29“ | 150mm | 42mm Rake
Tires
MAXXIS Minion DHR II
 
29“ x 2.4
Suspension
Fork
RockShox Pike Select +
 
29“ | 150mm | 42mm Rake
Charger 2.1 damper adjustable Low-speed compression, rebound, air volumne, air pressure
Shock
RockShox Super Deluxe Select +
 
210x55mm
adjustable Low-speed compression, rebound, air volumne, air pressure
Drivetrain
Crankset
SRAM GX Eagle
 
175mm | 32T | DUB
Cassette
SRAM XG1275 Eagle
 
10-50T | 12-Speed
Rear derailleur
SRAM GX Eagle
 
12-Speed
Shift rear
SRAM GX Eagle
 
12-Speed
Components
Headset
Acros AZX-576
 
High Cap
Stem
E13 Plus
 
50mm
Handlebar
E13 Plus
 
35mm Rise | 780mm Width
Grips
ODI Elite Motion V2.1
 
Lock-On
Brakes
SRAM G2 RSC
 
Rotor CENTERLINE 200mm/180mm
Adjustable reach and contact point
Seatpost
YT Postman
 
Ø 31.6mm | 125mm/150mm/170mm Drop | HE-Remote
Saddle
SDG RDR MNT
 
YT Custom
Weight
Weight
13,50 KG / 29,76 LB
 
Average weight for smallest size available, without tubes, pedals, and bottle.
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Jeffsy

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Base Base 2,299.00 €* 27 29
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Carbon Icon

Our carbon frames deliver ideal stiffness and ultimate reliability at impressively low weight. Using a monocoque production technique, tube walls get extra thickness only where required, to resist the intense forces in critical areas. By using fibers of different strengths and optimizing the layup, we create stiff yet lightweight frames that withstand even the gnarliestof maneuvers.

Aluminium Icon

The AL model was developed specifically for lovers of high-quality aluminum bikes. The elaborately-designed frame sets new standards in aluminum workmanship: the multi-butted, hydroformed tubes don't only keep weight down and improve resilience, but embody the look of a true YT. High performance at an attractive price is the focus here.

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