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SHIMANO

SHIMANO GRX RX820 12V Rear Derailleur

The SHIMANO GRX RX820 12V is designed to deliver smooth, quiet and reliable gear shifts on gravel courses and mixed terrain. Compatible with 12-speed... Read more
84,99 €
84,99 €
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Description

The SHIMANO GRX RX820 12V is designed to deliver smooth, quiet and reliable gear shifts on gravel courses and mixed terrain. Compatible with 12-speed 11-34T and 11-36T cassettes, it offers a wide range of gearing to maintain an optimal cadence in all conditions.

Equipped with SHIMANO SHADOW RD+ technology, this derailleur features an adjustable chain stabiliser that reduces chain slap and minimises the risk of derailment on rough terrain. Its operation also improves drivetrain quietness during technical rides.

The ON/OFF switch on the chain tensioner allows the stabilisation level to be adjusted according to the terrain, ensuring efficient pedalling on both smooth roads and technical trails. A high-performance solution for GRX 2x12-speed drivetrains.

Ref: 16046012105084

Informations techniques

Référence : RD-RX820
Compatible avec transmissions : 2x12 vitesses
Technologie : SHIMANO SHADOW RD+
Stabilisateur de chaîne intégré
Stabilisateur avec interrupteur ON/OFF
Changements de vitesse silencieux sur terrain accidenté
Réduction des battements de chaîne
Limitation des sauts de chaîne
Compatible avec cassettes :
11-34 dents
11-36 dents
Petit pignon compatible : 11 dents (min./max.)
Grand pignon compatible : 34 à 36 dents
Différence maximale entre plateaux : 17 dents
Capacité totale : 42 dents
Utilisation : Gravel / routes et terrains mixtes
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Informations prix

*Manufacturer's Suggested Retail Price in March 2026