2021 YT 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.

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2021 YT 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

April 2021

BikeRadar
YT Jeffsy Blaze review

Every Jeffsy we’ve ridden has made us return home with a Cheshire cat’s grin

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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...

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July 2021

Vital MTB
2021 YT Jeffsy Core 3 29 Bike

Not your typical Vital bike test...

Read Full Review

December 2020

ENDURO Mountainbike Magazine
Reviewing the YT JEFFSY PRIMUS JP 24 – a full susser for ambitious baby shredders

“Come on kids, get ready and pack your stuff, today we’re heading to the mountains! We’ll hike all day and drink a big glass of fresh buttermilk at the top!" Sound familiar? Yeah, great memories, but times have changed and modern kids have a totally different idea of fun. The YT JEFFSY PRIMUS JP 24 delivered tons of it on our last family outing.

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July 2020

BIKE Magazine
Tested: YT Jeffsy Base 29

At less than half the price of the previous Jeffsy 29 we tested, the YT Jeffsy Base 29 is by no means half the bike.

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April 2020

MBR
YT Jeffsy 29 CF Comp review - MBR

Back to defend its Trail Bike crown is the YT Jeffsy 29 CF Comp 29. Revamped last year: a new carbon frame, adjustable geometry, top-quality spec.

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March 2019

MTBR
2019 YT JEFFSY launched

YT Industries has launched the all-new YT JEFFSY, a bike the German direct-to-consumer seller calls its most versatile and aggressive trail bike to date. - Mtbr.com

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May 2018

Flow Mountain Bike
Video: Our YT Jeffsy Custom Build

The YT Jeffsy is a ripper of a bike. It’s hard to explain why; when you look at it on paper there’s nothing particularly magical about its numbers or suspension. But on the trails, it flat out shreds, down, up and round the bends. We fell in love with this bike last year, when we …

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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

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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2021 YT Jeffsy CORE 2
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