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2019 YT Industries

JEFFSY 27 CF Pro

A 27.5″ carbon frame full suspension enduro bike with high-end components.
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Manufacturer Price

$3,999
Weight28.4 lbs  
FrameCarbon
SuspensionFull, 150 / 150mm
ForkRockShox Pike RCT3
ShockRockShox Deluxe RT3
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle
BrakesSRAM Guide RS Hydraulic Disc
SeatpostDropper
Where to Buy
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Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
JEFFSY 27 CF Pro
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

JEFFSY 27 CF Pro

26 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The YT Industries Jeffsy is a highly capable trail bike, praised for its aggressive design, improved geometry, and excellent value. It offers a smooth, efficient ride with a suspension that handles both small bumps and larger impacts well. The bike is noted for its stability at speed and agility, making it a favorite among aggressive riders. However, some reviews mention issues with component choices like harsh-feeling wheels and underpowered brakes in steep terrain.

Pros
  • Aggressive design aimed at serving aggressive riders

  • Improved geometry for better handling

  • Excellent value for money

  • Smooth and efficient suspension performance

  • Stable at speed yet agile

Cons
  • Harsh-feeling wheels and tires

  • Underpowered brakes in steep terrain

  • Some components require adjustment

Key Quotes
From end to end, YT’s entire lineup is aimed primarily at serving aggressive riders.
BIKE Magazine logoBIKE Magazine
The Jeffsy’s updates make it hugely capable on a wide range of trails
BikeRadar logoBikeRadar
Bang Boom Bang – the JEFFSY likes it rough!
Enduro Mountainbike Magazine logoEnduro Mountainbike Magazine
This is not an enduro bike! It's a very capable trail bike.
NSMB logoNSMB
The highly revamped 2019 YT Jeffsy is now hitting consumers’ hands and receiving rave reviews with new owners.
MTBR logoMTBR

Feedback?

View all reviews

Vital MTB
2020 YT Jeffsy Base 29 Bike

Sep 2020 · Sspomer

If you can get it, GET IT.

Read Review

NSMB
REVIEW: YT Jeffsy CF Pro Race 29

Jun 2020

YT's bruiser of a trail bike blurs enduro lines

Read Review

BIKE Magazine
Bible Review: YT Jeffsy 27.5 CF Pro

Jan 2020

The YT Jeffsy is like the bike equivalent of twin-tip skis, inviting lots of rider input and encouraging you to play with the terrain.

Read Review

Singletrack World
YT Jeffsy CF 29 Pro Race 2019 - First Ride Review

Jan 2019 · Hannah Dobson

It’s the first few minutes of a bike launch and I’m having to try quite hard not to weep. The scepticism brought about by predictably dramatic music, followed by an...

Read Review

BikeRadar
YT Jeffsy CF Pro 27 first ride review

Jan 2018 · Rob Weaver

Instead, the Jeffsy 27 offers some impressive all-round credentials and is as happy being razzed about in your local woods as it is clocking up the trail miles, though the bigger-wheeled version does feel like it carries speed a touch better.. .

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Loam Wolf
Review: YT Jeffsy CF Pro 27.5

Dec 2017 · Drew Barber

Priced right and packing good looks, the YT Jeffsy is a tempting buy. But how does the Jeffsy star up on the trail or against its 29" brother?

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Enduro Mountainbike Magazine
YT JEFFSY 27 CF Pro Race Review

Nov 2017 · Christoph Bayer

JEFFSY 27 or CAPRA? For our enduro bike comparison, YT sent us the YT JEFFSY 27 CF Pro Race. Does this bike live up to its name? [...]

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MBR
YT Industries Jeffsy CF Pro Race 27 (2017) review - MBR

Aug 2017 · Alan Muldoon

The Jeffsy CF Pro Race 27 takes the stock 27 platform and pumps the travel up to 160mm. It’s something of a lone wolf within the Jeffsy 27 range.

Highs
  • Light, fast and dressed to impress.

Lows
  • Takes the Fox 34 to the limit.

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Geometry
Specs
Build
Frame

JEFFSY CARBON 27,5" high modular carbonfiber frame, V4L Virtual 4-Link rear suspension, 148x12mm DT Swiss QR Thru axle, down tube/seat stay/chain stay protection

Fork

RockShox Pike RCT3 27,5“ | 150mm | 15x110mm | 46mm Rake

Travel150mm

Shock

RockShox Deluxe RT3 | 230x60mm

Travel150mm

Bottom Bracket

SRAM DUB Pressfit

Headset

Acros AZX-203 High Cap

Stem

Race Face Turbine R 35 50mm

Handlebar

Race Face Turbine R 35 35mm Rise | 800mm

Saddle

SDG FLY MTN Cutout YT Custom | Red | White

Seatpost

e*thirteen TRS Plus 31.6mm | S 125mm Drop | M - XL 150mm Drop | XXL 170mm Drop

TypeDropper

Pedals

included / inklusive The included pedals were not made for demanding trails or racing. That is why we also offer you quality pedals at an attractive price in the shopping cart.

Grips

ODI Elite Motion V2.1 | Lock On

Groupset
Rear Derailleur

SRAM GX Eagle 12-Speed

Crank

SRAM GX Eagle 175mm | 34T | DUB

Shifters

SRAM GX Eagle 12-Speed

Cassette

SRAM XG-1275 Eagle 10-50T | 12-Speed

Chain

SRAM GX Eagle

Chain Guide

None included

Brakes

SRAM Guide RS ROTOR CENTERLINE | 200mm / 180mm

TypeSRAM Guide RS Hydraulic Disc

Brake Levers

SRAM Guide RS

Wheels
Rims

e*thirteen TRS Plus 27,5“ x 28mm | 110x15mm | 148x12mm

Spokes

e*thirteen TRS Plus wheelset

Front Hub

e*thirteen TRS Plus wheelset, 15mm x 110mm front, 12mm x 148mm rear

Rear Hub

e*thirteen TRS Plus wheelset, 15mm x 110mm front, 12mm x 148mm rear

Tires

Front: e*thirteen TRS Plus 27,5" | 2.35, Rear: e*thirteen TRS Plus 27,5" | 2.35

Rider Notes
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First added March 17

Last updated August 20

Not listed for 2,483 days