Shimano ST-R4020 Tiagra 2-speed STI bled with BR-RS405 flat mount calliper

From £259.99

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Sigma Sports
£259.99

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Price last checked: 02/05/2026

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Shimano ST-R4020 Tiagra 2-speed STI bled with BR-RS405 flat mount calliper

Shimano ST-R4020 Tiagra 2-speed STI bled with BR-RS405 flat mount calliper Upgrade your bike with the Shimano Tiagra ST-R4020 hydraulic disc brake and shift lever, designed for cyclists who want smooth, precise shifting and dependable braking. The slim, ergonomic dual control lever delivers intuitive gear changes with a short, natural shift arc, while the hydraulic system provides powerful, consistent stopping with minimal effort, especially from the hood position. An auto-adjusting hydraulic reservoir maintains optimal pad-to-rotor clearance as pads wear, ensuring reliable braking performance every ride. With tuneable reach adjusters and an easy-to-bleed mineral oil hydraulic system, this lever offers a comfortable, high-performance upgrade compatible with Shimano 11-speed Tiagra chains and RD-R4000 or RD-U6040 rear derailleurs. Product is available in left side rear, and right side front.

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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.