2021 YT Industries Jeffsy CORE 2

A 27.5″ aluminum frame full suspension enduro bike with high-end components, priced near the middle of the JEFFSY model range.

2021 YT Industries Jeffsy CORE 2
MSRP$2,999
Weight33.3 lbs
SuspensionFull
Travel160mm rear, 160mm front
FrameAluminum
ForkFox Performance Float 36

Wheels27.5″
Drivetrain1 × 12
GroupsetNX Eagle, Truvativ Descendant

BrakesHydraulic Disc
SeatpostDropper post
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Gearing

1 × 12 — 12 speed

Jeffsy CORE 2

26 mph

Similar Bikes

26 mph

The Jeffsy CORE 2 is easier to ride up hills than similar bikes.

The Jeffsy CORE 2 is geared about the same as similar bikes for riding downhill.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$500$1,000$1,500$2,000$2,500
This bike
Other enduro bikes

Reviews

May 2022

BikeRadar
YT Jeffsy 29 Core 3 review

An excellent complete package that makes fun of all but the gnarliest descents, thanks to a head angle that feels too steep

Read Full Review

April 2022

Pinkbike
YT Drops New Jeffsy Uncaged 8 Build

Following the recent release of YT's Capra and Decoy MX Uncaged 9 builds is the trail-friendly 150mm Jeffsy Uncaged 8.

Read Full Review

December 2021

Beta
The Beta Tests: YT Jeffsy Core 2 29

A great value with an appetite for rowdier trails. . 

Read Full Review

November 2021

MBR
YT Industries Jeffsy Core 2 review: great suspension and handling - MBR

Whether you’re 5ft 1in or 6ft 4in tall, you won’t have any issues achieving a glove-like fit on the YT Industries Jeffsy Core 2.

Read Full Review

October 2021

Loam Wolf
Review: YT Jeffsy 29 Core 4

The YT Jeffsy 29 Core 4 is a versatile all mountain bike that’ll happily crunch out mellower miles or tackle some tough enduro tracks.

Read Full Review

August 2021

Mountain Bike Action
BIKE REVIEW: YT JEFFSY ALL-MOUNTAIN MACHINE - Mountain Bike Action Magazine

The Jeffsy hits the mark for a rider who wants to go a step beyond...

Read Full Review

July 2021

Vital MTB
2021 YT Jeffsy Core 3 29 Bike

Not your typical Vital bike test...

Read Full Review

June 2021

Outdoor Gear Lab
YT Jeffsy Core 3

The Jeffsy Core 3 is the latest version of YT's popular longer travel trail bike. While other brands have gone to extremes with their geometry, this bike's...

Read Full Review


Geometry

Sizing
SM

5'0" – 5'6"

MD

5'4" – 5'10"

LG

5'8" – 6'1"

XL

5'11" – 6'5"

XXL

6'3" – 6'8"


Specs
Build
Frame

Aluminum

ColorsMetal Silver; Black Magic

Fork

FOX 36 Float Performance, 27,5“ | 160 mm Travel | Grip | 110 x 15 mm Axle | 44 mm Offset

Rear Shock

FOX FLOAT DPX2 PERFORMANCE, Shock Length: 230 mm | Shock Stroke: 65 mm ≙ 160 mm Travel | 3pos-Adjust

Headset

ACROS AZX-576, High Cap

Stem

E13 Base 35, Length 50 mm

Handlebar

E13 Base 35

Saddle

SDG BEL AIR 3.0, YT Custom | Width 140 mm

Seatpost

YT POSTMAN, Ø 31.6 mm | 125 mm Drop (Frame Size S-M) | 150 mm Drop (Frame Size L) | 170 mm Drop (Frame Size XL-XXL) | Standard Remote

Grips

ODI ELITE MOTION V2.1, Lock-On

Groupset
Rear Derailleur

SRAM NX EAGLE, 12-speed

Crank

SRAM Descendant 6k, Crank Arm Length 175 mm | 32T I DUB-PressFit

Shifters

SRAM NX EAGLE, 12-speed

Cassette

SRAM PG 1230 EAGLE, 10-50T | 12-speed

Brakes

SRAM G2 R, Rotor CENTERLINE Ø front 200 mm / rear 200 mm | Adjustable Reach

Wheels
Rims

DT SWISS M 1900 SPLINE, Aluminum Rims 27,5“ | Inner Width 30 mm | Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm

Tires

MAXXIS MINION DHR II, Tire Size 27,5“ x 2.4 | EXO Casing | Tubeless Ready | Dual Compound

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