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2018 YT Industries

Jeffsy 27 AL Comp

A 27.5″ aluminum frame full suspension enduro bike with upper mid-range components.
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Manufacturer Price

$2,799
Weight29.2 lbs  
FrameAluminum
SuspensionFull, 150 / 150mm
ForkRockShox Pike RC
ShockRockShox Deluxe
Wheels27.5″ Aluminum
Drivetrain1 × 11
GroupsetSLX
BrakesSRAM Guide RS Hydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Jeffsy 27 AL Comp
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)

29 mph

Jeffsy 27 AL Comp

26 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The YT Industries Jeffsy is a trail bike that excels in aggressive descending and technical climbs, thanks to its Virtual 4 Link suspension and adjustable geometry. It offers excellent value with its consumer-direct business model, though some builds may feel twitchy at high speeds or limited in suspension travel. The bike is frequently praised for its fun factor and versatility on a variety of trails.

Pros
  • Consumer-direct business model keeps prices significantly lower

  • Virtual 4 Link suspension provides excellent small-bump sensitivity and mid-stroke support

  • Ideal geometry for aggressive descending with adjustable angles

  • Snappy and agile yet stable on technical uphill sections and high-speed descents

Cons
  • Frame can’t accept traditional water bottles

  • Some builds may feel twitchy at higher speeds

  • Limited suspension travel on rougher terrain

Key Quotes
if this was the $4,600 version, how could the flagship CF Pro ride any better?
BIKE Magazine logoBIKE Magazine
Fast, agile, feedback-rich and top value, but its short travel and uptight geometry are frustrating
BikeRadar logoBikeRadar
The YT Jeffsy is a ripper of a bike.
Flow Mountain Bike logoFlow Mountain Bike

Feedback?

View all reviews

BIKE Magazine
The New 2019 YT Jeffsy 27 and 29

Jan 2019

The Jeffsy MK2 got a lot more than a minor facelift—re-worked geometry, updated suspension kinematics and plenty of smart design features abound.

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NSMB
Introducing the 2019 YT Jeffsy MK II (Ridden in Portugal)

Jan 2019

The new Jeffsy gets more travel in both wheel sizes, a better pedalling platform, longer reach, shorter offset and of course Christopher Walken...

Read Review

BikeRadar
YT Industries Jeffsy 29 AL review

Dec 2018 · Guy Kesteven

Fast, agile, feedback-rich and top value, but its short travel and uptight geometry are frustrating. Buy if you want a fast, agile alloy trail bike

Highs
  • Outstanding spec for the money

  • Naturally fast, involving and enjoyable ride

  • Well-balanced suspension feel

Lows
  • Grumbly cassette and limited seatpost adjustment

  • Tall position and short reach and wheelbase mean it can feel twitchy at higher speeds

Read Review

Enduro Mountainbike Magazine
YT JEFFSY 29 AL Comp review

May 2018 · Christoph Bayer

The YT JEFFSY 29 AL Comp is the defending champion in this group test, securing both the coveted Best in Test and Best Value titles last year. For the new season, YT kept revisions down to a minimum and just switched out the drivetrain, so is that enough to defend the title?

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Singletrack World
Review: The £2199 YT Jeffsy AL One 29 Is One Of The Best Value Trail Bikes We've Ever Tested

Jan 2018 · Barney Marsh

The build kit on this bike is insanely good for the money

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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?

Read Review

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.

Read Review

MTB Mag
[Tested] YT Jeffsy CF Pro 27

Jun 2017 · Francesco Mazza

In April 2016 Young Talent Industries launched their first 29er, the Jeffsy 29, following the successful aggressive trail bike trend, like many other brands are doing now. In February 2017 YT stretched out the Jeffsy range by presenting a 27.5” version of the bike with 6 different builds: the Jeffsy 27. For the first ride test, during the bike launch, we were given the top notch CF Pro Race, with 160mm of travel at both wheels. For the more detailed test instead, we thought it would been interesting to try the CF Pro, which is the second build in terms of

Read Review

Geometry
Specs
Build
Frame

Aluminum

BB StandardBB86/BB92, Press Fit

Fork

RockShox Pike RC, 46mm rake, Boost

Travel150mm

Shock

RockShox Deluxe RT, 230mm x 60mm

Travel150mm

Bottom Bracket

Race Face BB92

Headset

Acros AZX-203

Stem

Race Face Turbine R, 50mm length

Handlebar

Race Face Turbine R 35, 35mm rise, 780mm width

Saddle

SDG Fly MTN, red, YT custom

Seatpost

e*thirteen TRS+, 125mm or 150mm drop

TypeDropper

Pedals

None included

Grips

SDG Slater

Groupset
Rear Derailleur

Shimano SLX Shadow Plus

Front Derailleur

N/A

Crank

Race Face Turbine, 175mm, Boost

Shifters

Shimano SLX, 11-speed

Cassette

e*thirteen TRS+, 9-46 tooth, 11-speed

Chain

Shimano CN-HG601-11

Chain Guide

N/A

Brakes

SRAM Guide RS with Centerline 200mm front/180mm rear rotors

TypeSRAM Guide RS Hydraulic Disc

Brake Levers

SRAM Guide RS

Wheels
Rims

DT Swiss M 1900 Spline, 30mm width

Front Hub

DT Swiss M 1900 Spline, Front: 15mm x 110mm, Rear: 12mm x 148mm

Rear Hub

DT Swiss M 1900 Spline, Front: 15mm x 110mm, Rear: 12mm x 148mm

Tires

Front: Maxxis High Roller II, 2.40" 3C MaxxTerra EXO, Rear: Maxxis High Roller II, 2.40" MaxxPro EXO

Rider Notes
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First added April 14

Last updated April 14

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