YT Industries Jeffsy Primus JP 26

Name: YT Industries Jeffsy Primus JP 26
Brand: YT Industries

2020 YouthMountain youth Manufacturer page

Last known price: $1,999

Prices shown first for United States
Travel: 140 / 140 mm Fork / rear shock
Wheels: 26″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Weight: 13.9 kg 30.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

One Size

The manufacturer did not publish rider heights for these sizes.

Components

15 of 17 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

4 parts

Brakes

1 part

Brakes
- SRAM Guide R

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips
- ODI
Handlebar
- e*thirteen
Headset
- Acros
AZX-576
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
- YT Industries
Stem
- e*thirteen

Sizes and geometry

1 size Open in the geometry plotter

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

Size One Size

Table

Reach 397mm

Stack 549mm

Wheelbase 1105mm

Head angle 65.5°

Seat angle 76.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	397
Stackmm	549
Top tube lengthmm	533
Seat tube lengthmm	355
Head tube lengthmm	95
Head tube angle	65.5°
Seat tube angle	76.5°
Chainstay lengthmm	415
Wheelbasemm	1105
Front centermm	690
Bottom bracket dropmm	4
Bottom bracket heightmm	349
Standover heightmm	628
Fork rakemm	41
Stack/reach ratio	1.38

Not published by the manufacturer: Trail, 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: 13.9 kg

30.6 lb

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 15.6 in
Highest gear: 70.9 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: 26″

Technical analysis

2 measures

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

Lowest gear

15.6 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2020
Sample: 159 bicycles with this information
Coverage: 78.7% of the class

Highest gear

70.9 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2020
Sample: 159 bicycles with this information
Coverage: 78.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.0 km/h
Highest gear: 27.2 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: 15.6–70.9 gear inches
Class reference (p10–p90): 16.6–75.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2020
Lowest gear: 159 bicycles with this information, 78.7% of the class
Highest gear: 159 bicycles with this information, 78.7% 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 2020 builds

Differences across 2020 builds
Specification	This bicycle YT Industries Jeffsy Primus JP 26	YT Industries Jeffsy Base	YT Industries Jeffsy Base 29	YT Industries Jeffsy Comp	YT Industries Jeffsy Comp 29	YT Industries Jeffsy Primus JP 24
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Aluminum
Bicycle weight	13.9 kg	14.1 kg	14.2 kg	13.8 kg	13.9 kg	12.3 kg
Suspension
Front travel	140 mm	160 mm	150 mm	160 mm	150 mm	130 mm
Drivetrain
Smallest chainring	30	32	32	32	32	30
Largest chainring	30	32	32	32	32	30
Rear sprockets	12	12	12	12	12	11
Largest sprocket	50	50	50	50	50	42
Lowest gear	15.6 in	17.6 in	18.6 in	17.6 in	18.6 in	17.1 in
Highest gear	70.9 in	80.0 in	84.4 in	80.0 in	84.4 in	65.5 in
Cockpit
Seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Rigid seatpost
Other specifications
Fork spring	Air	Air	Air	Air	Air	Not informed
Rear travel	140 mm	160 mm	150 mm	160 mm	150 mm	130 mm
Wheel size	26″	27.5″	29″	27.5″	29″	24″