Say ‘good-bye’ to Jeffsy Pro, Comp and Base and ‘hello’ to Jeffsy Core

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YT are on a Good Times roll this week with the second release in as many days! Check out the new Jeffsy Core series.

If the big travel of yesterdays new alloy Capra launches didn’t float your boat, then how about a refreshed version of the popular Jeffsy trail/all-mountain bike?

With the release of the Jeffsy Core, YT has done away with its original naming strategy. What this means is that Jeffsy Pro Race, Pro, Comp and Base have been completely replaced by the new Core models. There will be 3 Jeffsy Core bikes, each built to a certain price point.

yt jeffsy core

The Jeffsy Core 4 and Core 3 builds will come with 29in wheels and carbon fibre framesets whereas the more affordable Jeffsy Core 2 will only come in an alloy, but will be sold with either 29in or 27.5in wheels. Core specification bikes will be available all year, but special edition Uncaged Jeffsy builds will be launched throughout the year.

All 3 builds come in a wide range of sizes from S to XXL, and each bike comes with a flip-chip to drop the BB by 8mm and knock 0.5 degrees from the head and seat tube angles.

Full build specs of each bike are available over on the YT website, but here is a quick rundown of the standout features of each Jeffsy Core bike;

Jeffsy Core 4

  • Carbon frame
  • Fox Factory 36 fork
  • Fox Float DPX2 shock
  • 150mm Travel, 29er only
  • SRAM X01 Eagle
  • SRAM G2 RSC brakes

Jeffsy Core 3

  • Carbon frame
  • Fox 36 Performance Elite Fork
  • Fox DPX2 rear shock
  • 150mm travel, 29er only
  • SRAM GX Eagle
  • SRAM G2 R Brakes

Jeffsy Core 2

  • Alloy Frame
  • Fox 36 Float Performance Fork
  • Fox DPX2 shock
  • 150mm travel 29er
  • 160mm travel 27.5
  • SRAM NX Eagle drivetrain

Jeffsy Core 29er Geometry

Sizes  SM  L  XL  XXL
Top tube572 mm593 mm615 mm638 mm660 mm
Reach430 mm450 mm470 mm490 mm510 mm
Stack618 mm622 mm627 mm636 mm640 mm
Seat tube length400 mm415 mm435 mm460 mm485 mm
Chainstay435 mm435 mm435 mm440 mm440 mm
Head tube angle66°/66.5°66°/66.5°66°/66.5°66°/66.5°66°/66.5°
Seat tube angle (eff)77° / 77.5°77° / 77.5°77° / 77.5°77° / 77.5°77° / 77.5°
Seat tube angle (act)70.5° / 71°70.5° / 71°70.5° / 71°70.5° / 71°70.5° / 71°
BB Drop 32 / 24 mm32 / 24 mm32 / 24 mm32 / 24 mm32 / 24 mm
Wheelbase1174 mm1196 mm1218 mm1247 mm1269 mm
Head tube length100 mm105 mm110 mm120 mm125 mm
BB Height344 / 352 mm344 / 352 mm344 / 352 mm344 / 352 mm344 / 352 mm
Standover Height676 mm684 mm697 mm711 mm726 mm

Jeffsy Core 27.5 Geometry

Sizes  SM  L  XL  XXL
Top tube567 mm590 mm613 mm636 mm660 mm
Reach422 mm442 mm462 mm482 mm502 mm
Stack598 mm608 mm617 mm626 mm635 mm
Seat tube length395 mm415 mm425 mm460 mm485 mm
Chainstay432 mm432 mm432 mm437 mm437 mm
Head tube angle65.5°/66°65.5°/66°65.5°/66°65.5°/66°65.5°/66°
Seat tube angle (eff)76.5.° / 77°76.5.° / 77°76.5.° / 77°76.5.° / 77°76.5.° / 77°
Seat tube angle (act)70.5° / 71°70.5° / 71°70.5° / 71°70.5° / 71°70.5° / 71°
BB Drop 13 / 6 mm13 / 6 mm13 / 6 mm13 / 6 mm13 / 6 mm
Wheelbase1167 mm1191 mm1215 mm1244 mm1268 mm
Head tube length110 mm120 mm130 mm140 mm150 mm
BB Height344 / 352 mm344 / 352 mm344 / 352 mm344 / 352 mm344 / 352 mm
Standover Height676 mm684 mm697 mm711 mm726 mm

Jeffsy Core Weight

Modelkg
JEFFSY Core 4 2913.9
JEFFSY Core 3 2914.4
JEFFSY Core 2 2915.3
JEFFSY Core 2 2715.1

Jeffsy Core Price

ModelColorEURGBPUSD (net.)
JEFFSY Core 4 29Vlad Red / Black Magic4,999.00 €£4,499.00US$4,999.00
JEFFSY Core 3 29Assault Green / Black Magic3,999.00 €£3,599.00US$3,999.00
JEFFSY Core 2 29Metal Silver / Black Magic 2,799.00 €£2,499.00US$2,799.00
JEFFSY Core 2 27Metal Silver / Black Magic 2,799.00 €US$2,499.00US$2,799.00

For full specification details head over to the revamped YT website.


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Comments (4)

    Looks good. But why my has everyone gone for boring colours this year, I’m not a flouro fan but no yellows, bright blues, reds or oranges?

    Are YT selling to the UK? I had a look on their site for one of the Jeffsey Core 2’s and UK didn’t seem to be available in the “ship to” section

    I take back my last comment, I just needed to go to the UK site. Unfortunately the prices above don’t take into account the 20% VAT on top and the £100 shipping. The Core 2 goes up to over 3 grand.

    The website says…
    incl. VAT plus Custom Duties, Shipping and Import Cost

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