Description

SHIMANO GRX RD-RX812 Shadow RD+ 11-Speed Rear Derailleur
Elevate your gravel cycling experience with the SHIMANO GRX RD-RX812 rear derailleur, a masterpiece of engineering designed for the unique challenges of mixed-terrain adventure. Specifically built for 1×11-speed gravel drivetrains, this derailleur provides the silence, stability, and shifting precision you need to conquer everything from rough backroads and singletrack to smooth tarmac. It represents the pinnacle of dedicated gravel performance, allowing you to push your limits with unwavering confidence in your equipment.
Unshakeable Performance on Any Surface
The core of the GRX RD-RX812 is its revolutionary SHIMANO SHADOW RD+ technology. This integrated, adjustable chain stabilizer dramatically reduces chain slap and provides a quieter ride, even when navigating the most demanding, bumpy terrain. By virtually eliminating the risk of a dropped chain, you can focus on your line and maintain power transfer without hesitation. This system is meticulously tuned for the specific needs of gravel riding, offering the perfect balance of tension to keep your drivetrain secure without creating unnecessary friction. For ultimate versatility, a simple ON/OFF switch allows you to engage the stabilizer for maximum security on rough sections or disengage it for smooth, silent operation on pavement and for effortless wheel removal.
Precise, Reliable, and Ready for Adventure
Experience the smooth and reliable shifting that SHIMANO is renowned for, optimized for the diverse conditions of gravel riding. The RD-RX812 ensures crisp, immediate gear changes across the entire cassette, even under load. Its design is fully compatible with existing SHIMANO 11-speed DUAL CONTROL road levers, making it a seamless upgrade for your gravel or adventure bike. Engineered to handle a wide gear range, it accommodates large cassettes with up to a 42-tooth low sprocket, giving you the climbing gears you need to tackle the steepest ascents. With the SHIMANO GRX RD-RX812, your bike is transformed into a capable machine ready to explore new horizons with unmatched shifting reliability and drivetrain security.
Product Details and Specifications
Attributes: Gravel cycling, Long
SHIMANO GRX – Rear Derailleur – SHIMANO SHADOW RD+ – 42T max. low gear – 11 speed
With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and secure, precise shifting on mixed terrain. For smooth surfaces, the derailleur has an ON/OFF switch for the chain tensioner. The RD-RX812 derailleur is compatible with road sprockets with a max. of 42D.
Features:
* Quiet, seamless shifting on rough terrain
* Adjustable chain stabilizer prevents chain slack and slippage
* SHIMANO SHADOW RD+
* Smooth and reliable shifting on mixed surfaces
* Change the ON/OFF position of the gimbal to suit the terrain
* Clutch tension tuned for gravel
* Compatible with existing DUAL CONTROL road lever
* Top Sprocket: Max. 11D/min. 11D
* Bottom Sprocket: Max. 42D/min. 40D
* Overall capacity: 31D