Shimano GRX ST-RX815 GRX Di2 2-speed STI bled with BR-RX810 calliper, left rear

Was £344.99

From £310.49

Save 10.00%

Compare prices from trusted UK retailers below

Cyclestore
£310.49

View Deal

In Stock, ready to order
Price last checked: 22/09/2026

Browse all Brakes or explore Shimano offers
Find the best Shimano Brakes deals

Shimano GRX ST-RX815 GRX Di2 2-speed STI bled with BR-RX810 calliper, left rear

Shimano GRX with its gravel specific ergonomics optimized gearing options rugged reliability and quiet and stable drivetrain sets itself apart from the rest of the component world. GRX hydraulic disc brake 11-speed Di2 STI's give you control modulation and power with minimal effort in all riding conditions Higher brake lever axis and curved brake leverimproves grip and confidence on choppy surfaces and descents Raised hood head prevents hand misalignment and slippage Recessed finger notch prevents upward slipping Anti-slip texture and brake lever coating gives higher braking efficiency and reduces fatigue on long rides 11-speed E-tube Di2 compatible Levers are supplied without electrical cables as these need to be ordered separately to suit Kit contains bled left hand ST-RX815 STI BR-RX810 flat mount rear brake calliper with pads hose and mineral oil without rotor or adapter

black / original

View £310.49

Additional Resources:

Latest Cycling Deals & Promos from Cyclestore

Browse our latest cycling promos and vouchers now and start saving on everything from cycling jerseys and shoes to road bikes and electric bikes!

Cyclestore: Visit Cyclestore for some great deals
- Expires: 31 Dec 2026

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: Cyclestore

Cyclestore is a reputable cycling retailer known for its extensive selection of bicycles, accessories, and gear in the United Kingdom. Whether catering to seasoned cyclists or beginners, Cyclestore offers a diverse range of bikes, including road bikes, mountain bikes, hybrid bikes, and electric bikes, along with a comprehensive array of cycling accessories and clothing. The retailer is recognized for its commitment to customer satisfaction, providing expert advice to help customers make informed decisions about their cycling needs. With a strong online presence and a user-friendly website, Cyclestore makes it convenient for customers to browse and purchase products. Known for its competitive pricing and frequent promotions, Cyclestore has earned a solid reputation in the cycling community as a reliable destination for quality products and attentive customer service.