SHIMANO
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Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x
Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x
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Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x
Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x
The SHIMANO Grx Rd-Rx812 Rear Derailleur offers smooth and reliable mixed surface shifting and prevents chain slapping.
Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x
Item #: 242246699

Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x

89% of respondents would recommend this to a friend

Item #: 242246699

GMD 13199

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The SHIMANO Grx Rd-Rx812 Rear Derailleur offers smooth and reliable mixed surface shifting and prevents chain slapping.
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Product Details

Shop Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x online at a best price in The Gambia. B07VT2XG79
  • Material: Made of durable alloy
  • Cage Length: Long for better chain control
  • Capacity: Supports up to 31t
  • Cassette Range: Compatible with a maximum 11 - 42t and a minimum 11 - 40t cassette range
  • Gearing: Designed for 1x11 setup
Brand NameSHIMANO
ManufacturerShimano
Number of Items1
UPC192790448886
Included ComponentsRear Derailleur
Model NumberShimano
Manufacturer Part NumberIRDRX812
Unit Count1 Count
Item Weight12.8 ounces (362.88 grams)
Item Dimensions L x W x H11"L x 8"W x 3"H (27.9 x 20.3 x 7.6 cm)
ColorBlack
Material TypeMulti
Case Material TypeShimano Alloy
Mount TypeBraze-On Mount
Number of Teeth34
BrandSHIMANO
MaterialMulti
Mounting TypeBraze-On Mount

What's in the box

Rear Derailleur

Product Description

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Customer Questions & Answers

  • Question: What makes the Shimano GRX RD-RX812 Rear Derailleur suitable for gravel biking?

    Answer: The Shimano GRX RD-RX812 Rear Derailleur is specifically designed for gravel riding, offering a robust and reliable performance on diverse terrains. Its long cage allows for a wider range of gear ratios and better chain management while riding over rough surfaces. The clutch feature minimizes chain slap, enhancing stability and reducing potential damage on bumpy trails. Whether you're tackling steep climbs or fast descents, this derailleur ensures smooth shifting and optimal chain tension, making it an excellent choice for adventurers looking to explore unpaved routes.
  • Question: How does the clutch mechanism work in the Shimano GRX RD-RX812 Rear Derailleur?

    Answer: The clutch mechanism in the Shimano GRX RD-RX812 Rear Derailleur operates by engaging a spring-loaded arm that maintains constant tension on the chain. This design significantly reduces chain movement, preventing it from bouncing excessively, which is crucial for absorbing impacts on rough trails. By stabilizing the chain, it enhances shifting performance and contributes to the overall durability of your drivetrain. Riders will appreciate this feature when navigating challenging terrains, as it allows for more precise gear changes and a smoother ride.
  • Question: Can the Shimano GRX RD-RX812 be used with multiple chainrings?

    Answer: The Shimano GRX RD-RX812 is optimized for 1x drivetrain setups, meaning it is best suited for use with a single chainring. Its design supports efficient shifting and chain tension for this configuration. While it might technically function with a 2x system, utilizing the GRX RD-RX812 with a single chainring maximizes its benefits, including weight savings and simplicity in gear selection. Gravel riders looking for a streamlined, fuss-free experience will find this derailleur aligns perfectly with their needs.
  • Question: What is the weight of the Shimano GRX RD-RX812 Rear Derailleur?

    Answer: The Shimano GRX RD-RX812 Rear Derailleur weighs approximately 315 grams. This lightweight construction does not compromise durability, allowing riders to benefit from a high-performance component that won't add unnecessary weight to their bike setup. A lighter bike can improve handling and speed, especially on varied terrains. Cyclists who prioritize performance while keeping an eye on weight will appreciate the balanced design of this rear derailleur.
  • Question: Is the Shimano GRX RD-RX812 compatible with other Shimano drivetrains?

    Answer: The Shimano GRX RD-RX812 is primarily designed for Shimano's 11-speed GRX series, making it compatible with other 11-speed Shimano components. However, compatibility may vary if you're trying to mix it with older or non-11-speed Shimano systems. It's always advisable to check compatibility with your existing bike setup to ensure seamless shifting and optimal performance. Gravel enthusiasts looking for reliable components will find this derailleur works best within its intended ecosystem for the best results.
  • Question: What tools are required for installation of the Shimano GRX RD-RX812?

    Answer: Installing the Shimano GRX RD-RX812 requires basic bicycle maintenance tools, including a 5mm Allen wrench and possibly a chain tool for adjustments. This derailleur mounts easily to the derailleur hanger, and precise adjustments are crucial for optimal performance. Home mechanics can appreciate a quick installation process, which allows them to get back on the trails without much delay. Proper installation ensures smooth shifting and reduces the risk of issues during rides.
  • Question: How does the performance of the GRX RD-RX812 compare to other rear derailleurs?

    Answer: The performance of the Shimano GRX RD-RX812 stands out due to its specialized design for gravel riding, which prioritizes durability and smooth shifting under load. Compared to standard road or mountain bike derailleurs, the RD-RX812's clutch mechanism offers superior chain stability in rough conditions, making it ideal for mixed terrains. Riders targeting gravel events or mixed-surface rides will notice improved performance and reliability, setting it apart from general-purpose options.
  • Question: What gearing options can I use with the Shimano GRX RD-RX812 Rear Derailleur?

    Answer: The Shimano GRX RD-RX812 is designed to work with a wide range of gear ratios, typically accommodating cassettes ranging from 11-34 teeth. This flexibility allows riders to tackle a variety of inclines and terrains without compromising shifting performance. Whether you're climbing steep hills or cruising along flat roads, the RD-RX812 ensures that you have the right gearing for your riding style and environment. This adaptability makes it an excellent choice for mixed-terrain adventure cyclists.
  • Question: What colors does the Shimano GRX RD-RX812 Rear Derailleur come in?

    Answer: The Shimano GRX RD-RX812 Rear Derailleur is primarily available in a sleek black finish, offering a modern aesthetic that complements most bike styles. This neutral color ensures that it pairs well with a variety of frames and components while maintaining a rugged appearance ideal for gravel riding. Cyclists who prioritize style alongside performance will appreciate the clean and understated look of this derailleur, which matches the outdoor and adventure vibe of gravel biking.
  • Question: Where can I buy Shimano GRX RD-RX812 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, For 1x?

    Answer: You can buy the Shimano GRX RD-RX812 Rear Derailleur at Ubuy in The Gambia. Ubuy offers a user-friendly experience with a comprehensive selection of Shimano products, making it a reliable destination for cyclists looking for quality components. By purchasing from Ubuy, you can also benefit from their customer support and specialized services tailored for biking enthusiasts, ensuring you receive the right products for your cycling setup.

SHIMANO Rear Derailleurs Editorial Review

**** The Shimano GRX derailleur has garnered a positive reception from gravel biking enthusiasts for its performance and versatility across varied terrains. Users are particularly impressed by its ability to handle a wide range of cassette sizes, making it a valuable upgrade for those looking to maximize gear ratios for gravel riding and bikepacking. Enthusiasts report successful integration with extended cages and additional cassettes to achieve impressive gear ranges, highlighting its adaptability for challenging rides. Users celebrating the GRX's design note that the adjustment screws are user-friendly and conveniently placed, enhancing both accessibility and ease of use. However, a common critique emerges regarding the clarity of Shimano's product specifications, particularly in relation to their suitability for specific setups (1x vs. 2x), leading to confusion during purchasing. Although this is more of an issue with product descriptions rather than the derailleur's performance, it marks a point where manufacturers could improve user experience. Overall, the Shimano GRX derailleur is recognized as a solid investment for gravel bike enthusiasts who seek reliability, range, and performance, making it an appealing choice for both seasoned riders and those new to gravel cycling. **

Customer Reviews & Ratings

44 customers ratings
  • 5 Star
    81%
  • 4 Star
    17%
  • 3 Star
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  • 2 Star
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Pros

  • Excellent performance for gravel biking
  • Supports wide range of cassette sizes (e.g., up to 10-50)
  • User-friendly adjustment screws
  • Solid build quality
  • Versatile for bikepacking and varied terrains

Cons

  • Lack of clear specifications regarding compatible setups (1x, 2x)

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GMD 13199

Order now and get it around Saturday, September 12

QTY:

Only 5 items left in stock.
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Features & Benefits

  • Max capacity for 42t low sprocket and 11t top sprocket.
  • Adjustable Shimano RD+ chain stabilizer prevents chain slapping and drops.
  • Designed specifically for gravel riding and mixed surfaces.
  • Provides enhanced clutch tension for smooth shifting.
  • Compatible with Shimano road Dual Control Levers.
  • Upgrade your bike's performance with superior reliability.

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