The JEFFSY CORE 2 AL packs our signature gravity DNA into a robust 150/145mm package, ready to be your go-to for any mountain biking adventure. From technical singletrack to high-speed flow trails, this bike excels everywhere, and its spec list reflects just that.

We've raised the bar in all the right places with FOX suspension, DT Swiss wheelset, and Hayes Dominion brakes. The high-quality aluminum frame strikes a perfect balance between performance and durability, ensuring this machine is always ready for the gnarliest rides.

The choice is entirely yours. We offer the JEFFSY CORE 2 in both aluminum and high-modulus carbon fiber options, so you can always have the frame you've dreamed of. Opt for carbon for the performance advantage, or aluminum for that unyielding "FULL METAL" feel!

FOX 36 FLOAT Performance Series

The YT Jeffsy CORE 2 AL is equipped with a class-leading FOX Performance suspension package to offer superior traction and control on all types of terrain. The FOX 36 Float with 150mm travel at the front, thanks to GRIP damper technology, ensures you maintain your line even over the harshest obstacles. The strong 36mm stanchion structure minimizes flex on technical descents, offering precise steering.

The FOX Float X Performance shock at the rear perfectly manages Jeffsy's 145mm of rear wheel travel with flawless efficiency. Thanks to the 2-position (2-Pos) adjustment lever, you can stiffen the suspension with a single motion on long climbs to save energy, and then unleash the system's full potential when you start your descent. With Custom Tune factory settings perfectly matched to the frame geometry, this package guarantees that the wheel stays on the ground even during the most aggressive rides.

Specifications

Staff
Staff

Frame Size: S,M,L,XL,XXL

Color: Frost Blue, Black Magic

Bottle Set: Thirstmaster 6000 620ml gift

Suspension
Suspension

Front Fork: FOX 36 Float Performance 150mm / Grip / 15x110mm / 44mm Offset

Rear Suspension: FOX Float X Performance 145mm / 210x55mm / 2-Pos Lever / Custom Tune / 0.2 Spacer

Wheels
Wheels

Wheelset: DT Swiss M1900 30mm / Front 15x110 - Rear 12x148 / 6-bolt Rotor / Ratchet LN

Tires: Front Maxxis Minion DHF29x2.50 Rear Maxxis Minion DHR II 29x2.40 / Exo+ Casing / 3C MaxxTerra Compound / Tubeless Ready

Gear Group
Gear Group

Crankset: Shimano Deore SLX FC-M7100 170mm 32T Hollowtech II

Cassette: Shimano Deore SLX CS-M7100 10-51T 12S Hyperglide+

Rear Derailleur: Shimano Deore SLX RD-M7100 Shadow+ 12S

Shift Lever: Shimano Deore XT SL-M8100 12S Rapidfire Plus / 2 Way Release

Bottom Bracket: Shimano BB-MT801 BSA/24mm Hollowtech II

Components
Components

Headset: Cane Creek Series 10 / ZS44 ZS56 High Cap / 2 Spacer 5mm

Stem: RaceFace AEFFECT R35 / 50mm / +-0° / Black

Handlebar: YT Handlebar 35 / Rise 30mm 780mm Width / 8° Backsweep / 6° Upsweep

Grips: ODI Elite Motion V2.1 Lock-on

Brakes: HAYES Dominion A4 Stealth Black Grey

Rotors: Sram HS2 Front and Rear 203mm 6-bolt

Seatpost: YT Original Seatpost 31.6mm / 125mm(S) - 150mm(M) - 170mm(L) - 200mm(XL-XXL)

Saddle: SDG BEL AIR 3.0 Overland - Lux-Alloy Rails / YT Custom Design / 140mm

Weight
Weight

15.70 Kg - 34.61 Lbs

What's in the Box

  • Thirstmaster Canteen Set 620ML

  • YT Industries Jeffsy Core 2 Aluminum

  • YT x Crankbrothers Special Repair Kit

Size & Geometry

JEFFSY CORE 2 AL Geometri Tablosu

JEFFSY CORE 2 AL, modern trail geometrisi ile çevik sürüş karakteri ve yüksek iniş güvenini bir araya getirir. Aşağıdaki tablo 29” platform için ölçüleri göstermektedir.

Platform: 29” Bedenler: S / M / L / XL / XXL Birim: mm / °

Geometry

JEFFSY CORE 1 / 29” / Low
Ölçü S M L XL XXL
A — Top Tube578593609627645
B — Reach435455475495515
C — Stack613620627634642
D — Seat Tube385410435460485
E — Chainstay437437437442442
F — Head Tube Angle65°65°65°65°65°
G — Seat Tube Angle (Eff.)76.9°77.5°77.9°78.3°78.6°
H — BB Drop3333333333
I — Wheelbase11911214123812661289
J — Head Tube100108116124132
K — BB Height343343343343343
L — Standover730728732738742

Beden Rehberi

Önerilen boy aralıkları
S153 – 166 cm
M162 – 176 cm
L172 – 185 cm
XL181 – 194 cm
XXL190 – 203 cm

Ölçü Açıklamaları

Geometri referansları
ATop TubeÜst boru uzunluğu
BReachSürüş pozisyonunu belirleyen en kritik ölçülerden biri
CStackGidon yüksekliği hissini etkiler
EChainstayArka tarafın dengesi ve manevra karakteri
HBB DropOrta göbek düşümü / ağırlık merkezi hissi
IWheelbaseToplam dingil mesafesi / stabilite
Bu tablo JEFFSY CORE 2 AL için yayınlanan 29” geometri verilerine göre hazırlanmıştır.

High-End Aluminum Frame

Fox Float X 145mm Suspension

Thirstmaster Water Bottle Set Gift

Frequently Asked Questions

📌 When will my order be shipped?

Your orders will be delivered to cargo within 1-2 business days . This period may vary depending on the density during campaign periods.

📌 Which Cargo Company Do You Work With?

Shipments are made within Türkiye with Domestic Cargo. International shipments are sent with any of the companies DHL - FEDEX - TNT.

📌 How can I track my order?

When your order is shipped, the tracking number is shared via e-mail and SMS. You can track your order on the cargo company's website with this number.

📌 How can I return and exchange a product?

You can return the products within 14 days , unused and in their original packaging. You can review our return policy for detailed return procedures.

📌 When will I be refunded for the product I returned?

Once your return is approved, your payment will be refunded within 3-7 business days , depending on the payment method you used.

📌 Do your products have a warranty?

Yes! All products on sale are under manufacturer or distributor warranty . You can check the product descriptions for warranty period and conditions.

Didn't find your answer?

Do not hesitate to contact us.