YT Industries Jeffsy 27 AL Comp

2018 MountainEnduro Manufacturer page

Last known price: $2,799

Prices shown first for United States
Travel: 150 / 150 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 11 32t / 9–46t
Gear range: 511%
Weight: 13.24 kg 29.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

SM High
MD High
LG High
XL High

The manufacturer did not publish rider heights for these sizes.

Components

20 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Aluminum Not identified

Suspension

2 parts

Drivetrain

8 parts

Brakes

2 parts

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size MD High

Table

Reach 440mm

Stack 597mm

Wheelbase 1169mm

Head angle 66.5°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	415	440	460	480
Stackmm	584	597	611	620
Top tube lengthmm	573	602	625	648
Seat tube lengthmm	410	450	480	520
Head tube lengthmm	95	110	125	135
Head tube angle	66.5°	66.5°	66.5°	66.5°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	430	430	435	435
Wheelbasemm	1138	1169	1200	1224
Front centermm	708	739	765	789
Bottom bracket dropmm	15	15	15	15
Bottom bracket heightmm	340	340	340	340
Standover heightmm	708	737	752	782
Fork rakemm	42	42	42	42
Trailmm	109	109	109	109
Stack/reach ratio	1.41	1.36	1.33	1.29

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 13.24 kg

29.2 lb

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 150 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 11
Smallest sprocket: 9
Largest sprocket: 46
Lowest gear: 19.1 in
Highest gear: 97.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

5 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 538 bicycles with this information
Coverage: 97.1% of the class

Rear travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 464 bicycles with this information
Coverage: 83.7% of the class

Lowest gear

19.1 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 464 bicycles with this information
Coverage: 83.7% of the class

Highest gear

97.8 gear inches

This value is above the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 464 bicycles with this information
Coverage: 83.7% of the class

Shifting

Mechanical

16 of 554 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2018
Sample: 554 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.3 km/h
Highest gear: 37.5 km/h

Total gear range 511%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 19.1–97.8 gear inches
Class reference (p10–p90): 16.5–93.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2018
Lowest gear: 464 bicycles with this information, 83.7% of the class
Highest gear: 464 bicycles with this information, 83.7% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2018 builds

Differences across 2018 builds
Specification	This bicycle YT Industries Jeffsy 27 AL Comp	YT Industries Jeffsy 27 AL	YT Industries Jeffsy 27 CF	YT Industries Jeffsy 27 CF Pro	YT Industries Jeffsy 27 CF Pro Race	YT Industries Jeffsy 29 AL
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon	Carbon	Aluminum
Bicycle weight	13.24 kg	13.72 kg	12.76 kg	12.47 kg	12.33 kg	13.18 kg
Suspension
Front travel	150 mm	150 mm	150 mm	150 mm	160 mm	140 mm
Drivetrain
Lowest gear	19.1 in	19.1 in	19.1 in	19.1 in	19.1 in	20.2 in
Highest gear	97.8 in	97.8 in	97.8 in	97.8 in	97.8 in	103.1 in
Other specifications
Tire width	2.4″	2.4″	2.35″	2.35″	2.35″	2.4″
Rear travel	150 mm	150 mm	150 mm	150 mm	160 mm	140 mm
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon	Aluminum
Wheel size	27.5″	27.5″	27.5″	27.5″	27.5″	29″
Fork spring	Not informed	Air	Not informed	Air	Air	Air