YT Industries Jeffsy Core 2

Name: YT Industries Jeffsy Core 2
Brand: YT Industries

2021 MountainEnduro Manufacturer page

Last known price: $2,999

Prices shown first for United States
Travel: 160 / 160 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 12 32t / 10–50t
Gear range: 500%
Weight: 15.1 kg 33.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 154–166
MD 163–176
LG 173–185
XL 182–194
XXL 191–202

Components

15 of 15 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.

Suspension

2 parts

Drivetrain

4 parts

Brakes

1 part

Brakes
- SRAM G2

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size LG

Table

Reach 462mm

Stack 617mm

Wheelbase 1215mm

Head angle 65.5°

Seat angle 76.5°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	422	442	462	482	502
Stackmm	598	608	617	626	635
Top tube lengthmm	567	590	613	636	660
Seat tube lengthmm	395	415	435	460	485
Head tube lengthmm	110	120	130	140	150
Head tube angle	65.5°	65.5°	65.5°	65.5°	65.5°
Seat tube angle	76.5°	76.5°	76.5°	76.5°	76.5°
Chainstay lengthmm	432	432	432	437	437
Wheelbasemm	1167	1191	1215	1244	1268
Front centermm	735	759	783	807	831
Bottom bracket dropmm	6	6	6	6	6
Bottom bracket heightmm	352	352	352	352	352
Standover heightmm	676	684	697	711	726
Fork rakemm	39	39	39	39	39
Trailmm	119	119	119	119	119
Stack/reach ratio	1.42	1.38	1.34	1.30	1.27

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: 15.1 kg

33.3 lb

Suspension

Suspension configuration: Full suspension
Front travel: 160 mm
Rear travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 50
Lowest gear: 17.6 in
Highest gear: 88.0 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

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2021
Sample: 1,011 bicycles with this information
Coverage: 99.0% of the class

Rear travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2021
Sample: 839 bicycles with this information
Coverage: 82.1% of the class

Lowest gear

17.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2021
Sample: 892 bicycles with this information
Coverage: 87.3% of the class

Highest gear

88.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2021
Sample: 892 bicycles with this information
Coverage: 87.3% of the class

Shifting

Mechanical

65 of 1,021 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2021
Sample: 1,021 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.7 km/h
Highest gear: 33.7 km/h

Total gear range 500%

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: 17.6–88.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2021
Lowest gear: 892 bicycles with this information, 87.3% of the class
Highest gear: 892 bicycles with this information, 87.3% 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 2021 builds

Differences across 2021 builds
Specification	This bicycle YT Industries Jeffsy Core 2	YT Industries Jeffsy Base	YT Industries Jeffsy Base 29	YT Industries Jeffsy Blaze 29	YT Industries Jeffsy Comp	YT Industries Jeffsy Comp 29
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	15.1 kg	14.1 kg	14.2 kg	14.2 kg	13.8 kg	13.9 kg
Suspension
Front travel	160 mm	160 mm	150 mm	150 mm	160 mm	150 mm
Drivetrain
Smallest sprocket	10	11	11	10	11	11
Largest sprocket	50	50	50	52	50	50
Lowest gear	17.6 in	17.6 in	18.6 in	17.9 in	17.6 in	18.6 in
Highest gear	88.0 in	80.0 in	84.4 in	92.8 in	80.0 in	84.4 in
Other specifications
Tire width	2.4″	2.4″	2.4″	2.5″	2.4″	2.4″
Rear travel	160 mm	160 mm	150 mm	150 mm	160 mm	150 mm
Wheel size	27.5″	27.5″	29″	29″	27.5″	29″