The Shimano CUES ST-U6030 is a right-hand hydraulic dual control lever designed for drop-bar road and gravel bikes. It combines smooth 10/11-speed rear shifting with reliable hydraulic disc braking in a single ergonomic unit — delivering accessible performance for recreational riders who want durability and confidence on every surface.

Highlights

  • Integrated shift and brake: One lever controls rear shifting (up to 2 simultaneous shifts) and hydraulic disc braking, keeping your cockpit clean and your hands in control.
  • LINKGLIDE compatibility: Works with Shimano CUES 10/11-speed LINKGLIDE drivetrains, engineered for extended cassette and chain life — ideal for everyday riding and all-road adventures.
  • Hydraulic braking performance: Actuates hydraulic disc brake calipers for strong, consistent stopping power in all weather conditions with less hand effort than mechanical systems.
  • Reach adjust: Built-in lever reach adjustment lets you dial in the distance from handlebar to lever for your hand size and riding preference.
  • Ergonomic lever shape: Lever design inherited from Shimano's 105 road series research — a refined profile that shortens reach and improves comfort for a wider range of hand shapes.
  • Mineral oil system: Uses Shimano mineral oil for a reliable, low-maintenance hydraulic circuit compatible with SM-BH59-JK-SSR brake hose kits.

CUES — Built for the Real World

Shimano CUES is built around durability-first design for riders who put in the kilometres on road, gravel, and mixed terrain. The U6030 tier brings reliable hydraulic shifting-lever integration to drop-bar bikes at an accessible price point, pairing LINKGLIDE's longer-lasting drivetrain technology with a hydraulic brake system refined from Shimano's road groupset heritage. The result is a lever that rides confidently day after day without requiring constant drivetrain maintenance.

Compatibility & Fit

Right-hand lever only — controls rear shifting (10/11-speed LINKGLIDE) and right-side brake (in Australian setup: right lever = front brake). Compatible with Shimano CUES 10- or 11-speed rear derailleurs and LINKGLIDE-compatible cassettes. Recommended hydraulic disc brake calipers: BR-U6030 or BR-RS405 (flat mount, 160mm rotor recommended). Uses Shimano mineral oil hydraulic fluid. Brake hose kit: SM-BH59-JK-SSR. Clamp band diameter: 23.8–24.2mm (standard drop bar). Caliper, hose, and rotor sold separately.

Shimano offers a limited warranty covering defects in materials and workmanship. For warranty support, return the item to Tune Cycles.
  • Right-hand dual control lever: integrated 10/11-speed rear shifting and hydraulic disc brake actuation
  • LINKGLIDE compatible — works with Shimano CUES 10/11-speed LINKGLIDE drivetrains for extended durability
  • Up to 2 simultaneous rear shifts for responsive gear changes
  • Built-in reach adjust mechanism suits a wide range of hand sizes
  • Ergonomic lever profile refined from Shimano 105 series research
  • Hydraulic disc brake system using Shimano mineral oil — strong, consistent, low-maintenance
  • Compatible with BR-U6030 and BR-RS405 flat mount hydraulic brake calipers
  • Designed for drop-bar road and gravel bikes
SeriesShimano CUES
ModelST-U6030
HandRight
Speed Compatibility10/11-speed
Drivetrain TechnologyLINKGLIDE
Brake TypeHydraulic disc brake
Brake FluidShimano mineral oil
Compatible CalipersBR-U6030, BR-RS405
Brake Hose KitSM-BH59-JK-SSR
Clamp Diameter23.8–24.2mm
Weight417g
Handlebar TypeDrop bar
ColourBlack
Part NumberISTU6030RBI
SKU SHM-ISTU6030RBI
Barcode # 4550170849283
Brand Shimano

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