ST-R9180 STI SHIFT-BRAKE LEVER HYDRAULIC 2-SPEED Di2 TT/TRI

Shimano Dura-Ace ST-R9180 Di2 TT/TRI Hydraulic Shift-Brake Lever (2-Speed)

The Shimano ST-R9180 is a premium TT/Triathlon Di2 shift-brake lever designed for fast, confident control when you’re on the extensions. Built around Shimano’s proven hydraulic disc braking and crisp Di2 electronic shifting, it delivers smooth braking feel and reliable gear changes under pressure. Available through Mackay Cycles, it’s a top-tier upgrade for serious time trial and tri builds.

Why you’ll love it

• Purpose-built for TT/Tri: Designed to pair with extension / aero bar setups for racing positions.
• Di2 electronic shifting: Fast, precise shifts with a light button press (2-speed control).
• Hydraulic disc braking: Powerful, consistent braking with excellent modulation in all conditions.
• Dura-Ace level performance: Built for riders chasing maximum speed with dependable control.
• Clean, integrated feel: Suits modern aero builds with tidy routing and a pro-level finish.

Ideal for

• Time Trial bikes
• Triathlon bikes
• Di2 hydraulic disc brake conversions / upgrades

Notes

• Professional installation is recommended to ensure correct braking performance and Di2 setup.
• Please confirm compatibility with your Di2 system, brakes, and bar/extension configuration before purchase.