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YT Industries Jeffsy Primus 26

Last known price
$2,299
Travel
140 / 140 mm Fork / rear shock
Wheels
26″
Drivetrain
1 × 12
Weight
14 kg 30.9 lb · Reference configuration not specified
Frame
Aluminum
Brakes
Hydraulic disc
  • One Size

The manufacturer did not publish rider heights for these sizes.

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
  • Cassette PG-1210
  • Crankset
  • Rear derailleur
  • Shifters

Sizes and geometry

Size explorer

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

Size One Size

Table

Geometry diagram unavailable

The drawing needs wheelbase and head tube length, which the manufacturer did not publish. Available facts remain in the table.

Size Reach Stack

Specifications

Frame and fork

Intended fit
  • Unisex
Frame material
  • Aluminum
Bicycle weight
  • 14 kg
  • 30.9 lb

Suspension

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

Drivetrain

Derived by Bikelake
Front chainrings
  • 1
Rear sprockets
  • 12

Technical analysis

1 measure

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

Shifting

Mechanical

10 of 367 bicycles with this information use electronic shifting.

Cohort
Youth / Mountain youth Model year: 2025
Sample
367 bicycles with this information
Coverage
100.0% 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 2025 builds

Differences across 2025 builds
Specification This bicycle YT Industries Jeffsy Primus 26 YT Industries Jeffsy 29 Core 1 AL YT Industries Jeffsy 29 Core 2 AL YT Industries Jeffsy 29 Core 2 CF YT Industries Jeffsy 29 Core 3 AL YT Industries Jeffsy 29 Core 3 CF
Frame
Frame material Aluminum Aluminum Aluminum Carbon Aluminum Carbon
Bicycle weight 14 kg 16.5 kg 15.8 kg 15.1 kg 15.8 kg 15.8 kg
Suspension
Front travel 140 mm 150 mm 150 mm 150 mm 150 mm 150 mm
Rear travel 140 mm 145 mm 145 mm 145 mm 145 mm 145 mm
Drivetrain
Front chainrings 1 Not informed Not informed Not informed 1 1
Rear sprockets 12 12 Not informed Not informed 10 10
Cockpit
Seatpost Dropper seatpost Rigid seatpost Dropper seatpost Dropper seatpost Dropper seatpost Dropper seatpost
Shifting Mechanical Mechanical Mechanical Mechanical Electronic Electronic
Other specifications
Wheel size 26″ 29″ 29″ 29″ 29″ 29″
Fork spring Not informed Air Air Air Air Air
Bottom bracket standard Not informed Not informed Not informed Not informed BSA Not informed

Other models in this family

14 models

Published versions from the same family and model year.

YT Industries Jeffsy Primus 26, by YT Industries

This bicycle

Mountain youth

Jeffsy Primus 26

  • Weight: 14.0 kg
  • Suspension: 140 mm
  • Wheel size: 26″
YT Industries Jeffsy MX Uncaged 13, by YT Industries

Trail

Jeffsy MX Uncaged 13

Mountain / Trail

  • Weight: 15.5 kg
  • Suspension: 150/145 mm
  • Wheel size: 27.5″/29″
YT Industries Jeffsy Primus 24, by YT Industries

Mountain youth

Jeffsy Primus 24

Youth / Mountain youth

  • Weight: 12.6 kg
  • Suspension: 130 mm
  • Wheel size: 24″
YT Industries Jeffsy Primus 24 AL, by YT Industries

Mountain youth

Jeffsy Primus 24 AL

Youth / Mountain youth

  • Weight: 12.6 kg
  • Suspension: 130 mm
  • Wheel size: 24″
YT Industries Jeffsy Primus 26 AL, by YT Industries

Mountain youth

Jeffsy Primus 26 AL

Youth / Mountain youth

  • Weight: 14.0 kg
  • Suspension: 140 mm
  • Wheel size: 26″

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