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

ShimanoST-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.