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YT Industries Jeffsy Core 4

€2,249

€5,109new-56%

Ideal for
People between 1m68 and 1m81

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Why we love it

Le YT Jeffsy Core 4 est un vélo tout-terrain haut de gamme doté d'un cadre en carbone, destiné aux adeptes de trail ambitieux. Sa suspension équilibrée, dotée d'un débattement généreux, assure un excellent contrôle en descente, tandis que sa géométrie moderne et compacte ainsi que son faible poids sont des atouts indéniables en montée. Des composants haut de gamme, un changement de vitesse précis et des freins à disque puissants viennent compléter l'ensemble. Un vélo sans moteur, pur, réactif et vraiment rapide – pour un plaisir sans limite sur les sentiers.

Specifications

General

Brand: YT Industries

Model: Jeffsy Core 4

Usage: Mountain bike

Mountain bike category: Full-suspension

Color: Red

Year: 2023

Weight: 15 kg

Frame type: Closed

Sizing

Manufacturer's size: L (ideal for people between 1m68 and 1m81)

Seat tube length: 45 cm

Equipment & Accessories

Double kickstand: No

Mechanical

Frame & Suspensions

Frame material: Carbon

Fork model: Fox 36 Factory

Drivetrain & Braking

Shifting: Derailleur

Transmission: Chain

Derailleur model: SRAM XTR

Number of speeds: 12

Brakes: Disk | Hydraulic

Wheels & Tires

Wheels size: 29"

Tires: Maxxis Minion DHR II (61-622)

Dropper post: Yes

History and Inspection Report

Inspection

Every bike we sell undergoes our 50-point inspection process. Anything that doesn’t meet our standards is repaired or replaced by our mechanics.

YT Industries Jeffsy Core 4 (2023)

Frame, drivetrain, braking system, wheels, tires and suspensions inspected and tested

Fixed or repaired : gears, pedals, chain

Test ride, deep cleaning and final quality control check

This bike has been inspected and tested in Berlin in July 2026.

Documents

Ownership history

This YT Industries Jeffsy Core 4 was sold to us directly from a bike shop in July 2026.

Additional notes

Note that dropper posts usually have a slight side-to-side play.

This bike could cost less

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