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The Shimano Tiagra ST-R4020 2x dual control shift/brake lever for Tiagra 11-speed drivetrain brings a refined design and advanced ergonomics from Shimano's renowned 105 series. Its updated lever position and bracket design developed through research on diverse hand shapes ensures comfort and control for road cyclists. The premium lever feel reliable stopping power of the BR-RS405 2-piston flat-mount ICE Technology compatible disc brake caliper and the smooth intuitive 2x shifting ensures precision and confidence for road cycling.Refined lever shape shortens the reach distance allowing riders with a wider range of hand sizes to comfortably access the lever Features Reach-Adjust for additional fit customization Tiagra ST-R4020 left 2x shifter is designed for use with the Tiagra 11-speed system BR-RS405 2-piston flat mount low profile brake caliper provides consistent braking performance in all weather conditions Caliper includes finned L05A-RF resin pads with ICE Technology that help to reduce heat build-up and brake fade when paired with a Shimano ICE Technology rotor (rotor sold separately) One Way bleeding for quick and easy prevention of air in the hydraulic system
| Brake Lever Actuation | Hydraulic |
| Double or Triple | Double |
| Rotor Included | No |
| Brake Caliper Mount | Flat Mount |
| Brake Lever Use | Left |
| Brake Usage F/R | Front |
| Drivetrain Speeds | 11 |
| Front Der/Shifter Compatibility | Shimano Road |
| Color | Black |
| Hydraulic Fluid Type | Mineral Oil |
| Pad Compound | Resin |
| Hydraulic Hose Length | 1000 |
| Includes Brake | Yes |
| Adjustable Reach | Yes |
| Adjustable Contact Point | No |
| Defined Color | Black |
| Title | Default Title |