Shimano GRX 815 Di2 11-Speed Rear Derailleur

From £269.00
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Sigma Sports
£269.00
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Price last checked: 16/08/2026

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Shimano GRX 815 Di2 11-Speed Rear Derailleur

Shimano GRX 815 Di2 11-Speed Rear Derailleur The Shimano GRX 815 Di2 11-Speed Rear Derailleur has been specifically engineered for rough tracks, gravel roads and surfaces that would ordinarily cause the chain to bounce and slap. An innovative adjustable stabiliser uses spring force and friction to maintain tension thr ...
Shimano GRX 815 Di2 11-Speed Rear Derailleur The Shimano GRX 815 Di2 11-Speed Rear Derailleur has been specifically engineered for rough tracks, gravel roads and surfaces that would ordinarily cause the chain to bounce and slap. An innovative adjustable stabiliser uses spring force and friction to maintain tension through the chain, which prevents it from dropping and reducing noise from the drivetrain. The upshot is smoother, more reliable shifting no matter the surface, so whether you are riding bumpy gravel or smooth tarmac the derailleur functions with predictable crispness. You can even incorporate this into your regular electronic road-riding setup because the derailleur is compatible with current road Dual Control Levers.
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Other Colours & Sizes

Black

34T £269.00

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About: Shimano

Shimano is a leading brand in the cycling industry, renowned for its high-quality components and innovative technology. The company offers a range of cycling products, including drivetrains, brakes, wheels, pedals, and shoes. Shimano's drivetrain components, such as its derailleurs and shifters, are widely regarded as some of the best on the market, providing smooth and reliable shifting for cyclists of all levels. The company's disc brakes are also highly regarded, providing excellent stopping power and modulation. With a commitment to innovation and a focus on the needs of cyclists, Shimano continues to be a go-to choice for cyclists looking for top-of-the-line components for their bikes.

About: Sigma Sports

Sigma Sports is a leading cycling and triathlon retailer based in the United Kingdom. Sigma Sports provides a comprehensive range of products catering to cyclists, triathletes, and outdoor enthusiasts. The store offers a diverse selection of bicycles, cycling accessories, apparel, and gear from well-known brands. Sigma Sports is known for its commitment to quality, customer service, and expertise in the cycling industry. The retailer has both a physical store and a robust online presence, making it convenient for customers to explore and purchase products. Sigma Sports is often associated with a wide range of cycling disciplines, including road cycling, mountain biking, and triathlon.

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