Shimano / Cues

Shimano CUES ST-U4030 / BR-U6030 Disc Brake (hydraulic) - Dropbar | Flat Mount | J-Kit - 2-speed | left (L) | front (F)

Description

Shimano CUES ST-U4030 / BR-U6030 Disc Brake (hydraulic) - Dropbar | Flat Mount | J-Kit - 2-speed | left (L) | front (F)

Shimano CUES – Keeps You Moving

The highlight for all those who like to be active. Consistently developed for comfortable as well as safe movement and created with the aim of offering more versatility for the most diverse types of bikes. The experience-oriented CUES series combines incredibly smooth and stress-free shifting behavior with durability suitable for E-Bike use and up to three times greater longevity thanks to LinkGlide technology. With the U4030 components, Shimano is expanding the CUES family to offer riders another comfortable and at the same time low-maintenance option for use on road and gravel bikes.

Shimano CUES disc brake set consisting of the ST-U4030 lever and the hydraulic BR-U6030 brake caliper. Smooth and simple maintenance is ensured by the proven One Way Bleeding system and the Easy Hose Joint System which makes brake hose replacement considerably easier.

Shimano CUES ST-U4030 brake/shift lever

Noticeably more control for ambitious recreational athletes. The dual-control levers of the CUES U4030 series incorporate the modern features of the 105 models. The results of intensive research into different hand shapes are reflected in an optimized design that features a shorter reach and a correspondingly improved positioning of the brake lever blade. Typical of Shimano, this is complemented by reliable braking performance and smooth, intuitive shifting – ideal for extended road and gravel rides.

Shimano CUES BR-U6030 brake caliper

The hydraulic Flatmount brake caliper of the Shimano CUES series was specifically developed for a brake disc diameter of 160 mm. This is accompanied by an integrated design that makes an additional adapter superfluous. With its slim and lightweight 2-piston construction, the BR-U6030 brake caliper ensures reliable braking performance in all conditions.

J-Kit (Easy Hose Joint System) | For brake systems with J-Kit brake hose connection, the brake lever has an integrated squeeze seal (olive), which makes the installation and removal of the brake line much easier overall.

Dual Control Lever (DCL) | The Shimano DCL levers combine braking and shifting functions in one control unit for easy as well as comfortable operation. In raising the standard of performance, their innovative ergonomics are even more important to consider than adding additional gearing. However, the highlight of the STI shifters (Shimano Total Integration) shifters, is the ability to change gears front and rear with just one finger. The Dual Control levers owe this not only to an extremely precise and smooth operation, but also to the same stability for which Shimano's MTB technologies are already known.

Technical details:

  • lever housing: composite
  • lever blade, caliper: aluminum (painted)
  • pistons: resin
  • number of pistons: 2
  • mounting type: Flatmount
  • brake pad type: wide (B)
  • brake hose connection: straight (lever + caliper)
  • adjustability: reach
  • bleeding: One Way Bleeding

Compatibility:

  • front derailleur: FD-U6030
  • rear derailleur: RD-U4010, RD-U4020, RD-U3020
  • brake disc: SM-RT54, SM-RT30
  • brake pads: B05S-RX

Scope of supply:

1 brake/shift lever + 1 brake caliper (set, filled and bled)

  • variant L/F (left / front): incl. brake pads (B05S-RX, resin), brake hose (SM-BH59-JK-SSR, 1000 mm), shift cable (1800 mm) and shift cable housing (OT-SP41, 600 mm)
  • variant R/R (right / rear): incl. brake pads (B05S-RX, resin), brake hose (SM-BH59-JK-SSR, 1700 mm), shift cable (2200 mm) and 2 shift cable housings (OT-SP41, 600/300 mm)
Shimano Parts
Fact Sheet
Product Name: Shimano CUES ST-U4030 / BR-U6030 Disc Brake (hydraulic) - Dropbar | Flat Mount | J-Kit - 2-speed | left (L) | front (F)
Manufacturer: Shimano Parts
Item Code: SHI773784
activity: Cycling
usage bikesport: Road Bike, Cyclocross, Allroad / Gravel
Shifting System (Manufacturer): Shimano
Number of gears - front: 2
Shifting Type: Chain - Mechanical
disc brake mount: Flatmount
brake actuation: Hydraulic
Brake lever version: Drop bar
FW brake hose length: 1000mm
brake fluid: Mineral Oil
Disc brake - version: # Front Wheel, Set caliper & lever
Shift lever - Version: Shift-brake-lever, # Left
Model year: 2026
Color: Black
manufacturer item code: EU40303DLF6RC100A
Product Series: Shimano - Cues
GTINs: 4550170313715
Manufacturer page: http://www.shimano-europe.com/
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Manufacturer

Shimano

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