Shimano Tiagra ST-R4020 STI Lever With BR-RS405 Flat Mount Caliper
| Brand | Shimano |
|---|---|
| Colour | Black |
Slim ergonomically designed Tiagra Dual Control Levers for hydraulic disc brakes offer powerful braking and effortless 11-Speed shifting.
Refined lever design for confident road performance. The Shimano Tiagra 2x11s Dual Control Lever brings advanced ergonomics from Shimano's renowned Shimano 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, the reliable stopping power of hydraulic disc brakes, and the smooth, intuitive shifting that defines the Tiagra 2x11-Speed system deliver precision and confidence for road cycling.
The RS405 hydraulic disc brake is compatible with Ice Technology pads and provides consistent braking performance in all weather conditions.
Technology
Dual Control Lever
DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation.
Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from Shimano's MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration, and simply has to be experienced to be understood.
Shifting Lever Integrated With Brake Lever. Recommended For Road Bikes.:
The shifting lever is integrated with a brake lever. There are two levers, one large and one small. To upshift, use the small inner lever. To downshift, operate the large outer lever.
Reach Adjust
Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.
Benefits & Features:
- Lever reach adjustment
- Easy shifting and braking by the best lever position
Mountain Bike:
Reach Adjust of Dual Control Levers / Brake Levers:
Both brake levers and DCL are equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.
Ice Technologies
Shimano Ice Technologies components deliver more consistent braking performance by reducing heat buildup in the system. This helps prevent brake fade, which can happen when a rider applies the brakes repeatedly and strongly over a short period of time, such as when descending a long, steep hill.
Shimano has adopted Ice Technologies disc brake rotor and Ice Technologies pad to realize the cooling technology for consistent performance. The clad disc brake rotor blade, which has a 3 layer-sandwich structure of stainless steel, aluminium and stainless steel, provides better radiation performance. Also, the radiation fin has been adopted for the pad. Moreover, the clad disc brake rotor blade and the radiator fin provide long pad life, less noise, less fade and lightweight.
Clad rotors as well as Clad Brake pads significantly reduce heat build-up in the brake system. This in turn reduces fading, which ensures consistent high performance even on long downhill stretches, It also results in a longer pad life and substantially quieter braking.
One Way Bleeding
"One Way Bleeding" was developed for quick and easy prevention of air in Shimano's hydraulic system. Shimano have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system.
One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.
Features
- Ergonomic short shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes
- Hydraulic brake lever provides powerful, controllable and consistent stopping power with less effort especially from the hood position
- Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear
- Kit includes ST-R4020 STI, BR-RS405 flat mount brake caliper with pads, hose, and gear cable (Without rotor or adapter)
- Tuneable reach adjusters
- Easy bleed and clean hydraulic system, for use with Shimano mineral oil only
- Compatible with 11-Speed chains and RD-R4000/ RD-U6040 rear mech only
