Shimano
The Shimano GRX Shadow Plus RD‑RX822 is a 12‑speed rear derailleur designed for gravel and 1x setups. It uses a long SGS cage with 41‑tooth capacity, works with Shimano MTB 12‑speed drivetrains, and includes Shadow Plus chain stabilizer for improved chain control.
Checked Jun 30, 2026 18:43
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The Shimano GRX Shadow Plus RD‑RX822 rear derailleur is part of the GRX RX820 series aimed at gravel riding with a single front chainring. It features a long SGS cage that provides a total capacity of 41 teeth, allowing it to handle cassette ranges from 10‑51T. Compatibility is limited to Shimano MTB 12‑speed groupsets, using HG 12‑speed chains. The built‑in Shadow Plus technology incorporates a chain stabilizer that reduces chain slap on rough terrain and helps prevent chain drop, while still being switchable for smoother surfaces. Constructed primarily from aluminium, the derailleur offers a lightweight yet durable solution. The 13‑tooth guide and tension pulleys contribute to precise and quiet shifting across the full 12‑speed range, making it suitable for mixed‑terrain gravel bikes that require reliable performance and chain security.
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