YT Industries Jeffsy 27 AL Base

Name: YT Industries Jeffsy 27 AL Base
Brand: YT Industries

2019 MountainEnduro Manufacturer page

Last known price: $2,399

Prices shown first for United States
Travel: 150 / 150 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 12 34t / 11–50t
Gear range: 455%
Weight: 13.8 kg 30.4 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

21 of 24 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

JEFFSY ALLOY 27,5" hydro-formed aluminum frame, V4L Virtual 4-Link rear suspension, 148x12mm DT Swiss QR Thru axle, seat stay/chain stay protection Not identified

Suspension

2 parts

Drivetrain

7 parts

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips
- ODI
Handlebar
- Race Face Aeffect R 35
Headset
- Acros
AZX-203
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. Not identified
Saddle
- SDG
Seatpost
- SDG Tellis
Stem
- Race Face Aeffect R

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

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 Reported by the manufacturer

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	9	9	9	9
Bottom bracket heightmm	347	347	347	347
Standover heightmm	708	737	752	782
Fork rakemm	40	40	40	40
Trailmm	111	111	111	111
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: 13.8 kg

30.4 lb

Suspension

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

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 18.7 in
Highest gear: 85.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
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 below the central range for this class.

Cohort: Mountain / Enduro Model year: 2019
Sample: 626 bicycles with this information
Coverage: 98.7% of the class

Rear travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2019
Sample: 527 bicycles with this information
Coverage: 83.1% of the class

Lowest gear

18.7 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2019
Sample: 571 bicycles with this information
Coverage: 90.0% of the class

Highest gear

85.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2019
Sample: 571 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

18 of 634 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2019
Sample: 634 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 32.6 km/h

Total gear range 455%

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: 18.7–85.0 gear inches
Class reference (p10–p90): 16.5–92.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2019
Lowest gear: 571 bicycles with this information, 90.0% of the class
Highest gear: 571 bicycles with this information, 90.0% 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 2019 builds

Differences across 2019 builds
Specification	This bicycle YT Industries Jeffsy 27 AL Base	YT Industries Jeffsy 27 CF Comp	YT Industries Jeffsy 27 CF Pro	YT Industries Jeffsy 27 CF Pro Race	YT Industries Jeffsy 29 AL Base	YT Industries Jeffsy 29 CF Comp
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Aluminum	Carbon
Bicycle weight	13.8 kg	13.3 kg	12.9 kg	12.7 kg	13.9 kg	13.4 kg
Suspension
Front travel	150 mm	150 mm	150 mm	160 mm	140 mm	140 mm
Drivetrain
Smallest chainring	34	32	34	32	34	32
Largest chainring	34	32	34	32	34	32
Rear sprockets	12	11	12	11	12	11
Smallest sprocket	11	9	10	9	11	9
Largest sprocket	50	46	50	46	50	46
Lowest gear	18.7 in	19.1 in	18.7 in	19.1 in	19.7 in	20.2 in
Highest gear	85.0 in	97.8 in	93.5 in	97.8 in	89.6 in	103.1 in
Other specifications
Fork spring	Air	Air	Not informed	Air	Air	Air
Tire width	2.4″	2.35″	2.35″	2.35″	2.4″	2.35″
Rear travel	150 mm	150 mm	150 mm	160 mm	140 mm	140 mm
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Aluminum	Aluminum
Wheel size	27.5″	27.5″	27.5″	27.5″	29″	29″
Bottom bracket standard	Not informed	BB86/BB92	Not informed	BB86/BB92	Not informed	BB86/BB92