Product Details
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.
Features
- Product Type: Hydraulic Disc
- Product Type: Road & Drop Bar
- Speed: 11 Speed
- Speed: 2 Speed
- Discipline: Road
- Side: Left Rear, Right Front
- Di2: No
Specifications
- Discipline Compatibility
- Road
- Brake Type
- Disc
- Family
- Tiagra
- Gender
- Unisex
- Intended Use
- Endurance
- Product code
- 2013724 / 54293264990554
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Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
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About Shimano
Shifting the way the world rides.
From a single Osaka workshop in 1921, Shimano has grown into the world's most influential component maker. The brand's relentless engineering — Dura-Ace, Ultegra, GRX, XTR — has shaped the way the world shifts, brakes and rides, on the road and off it.
Shimano's flagship groupset, Dura-Ace, has been the benchmark for top-level road components for more than five decades. Every refinement that lands on Dura-Ace eventually shapes the entire Shimano range, all the way down to entry-level drivetrains.