Shimano GRX RD-RX812 1x11-Speed Rear Derailleur: Mastering Rugged Terrains

The Shimano GRX RD-RX812 11-Speed Rear Derailleur is designed to elevate your off-road and mixed terrain cycling experience. It features an integrated chain stabilizer mechanism that ensures quiet, secure, and precise shifting. Ideal for rough terrains, the derailleur includes an ON/OFF switch for the chain tensioner, enhancing its adaptability. It is compatible with MTB cassettes up to a 42T low sprocket max, making it a versatile choice for gravel biking.

Key Features:

• Silent and uninterrupted shifting, ideal for navigating through rough terrains.
• Adjustable chain stabilizer to prevent chain slap and derailment.
• SHIMANO SHADOW RD+ for reliable shifting across mixed surface conditions.
• ON/OFF switch for the stabilizer, allowing for terrain-specific adjustments.
• Gravel-tuned clutch tension for optimal chain control.
• Compatibility with current road DUAL CONTROL LEVER systems.
• Supports a wide range of sprocket sizes: Top sprocket max. 11T/min. 11T, Low sprocket max. 42T/min. 40T.
• Total capacity of 31T, catering to diverse gearing needs.

The Shimano GRX RD-RX812 Rear Derailleur is an essential component for cyclists who seek to conquer challenging terrains with confidence and control.