The Shimano Dura-Ace ST-R9100-R is the right-hand Dual Control Lever from Shimano's flagship mechanical road groupset, combining rear 11-speed shifting and braking into one precision-engineered unit. Built for elite road racing, it delivers shorter lever throws, lighter action, and a slimmer ergonomic profile that stays comfortable across long hours in the saddle.

Highlights

• Right-hand lever: controls rear derailleur (11-speed) and brake
• Shorter shift stroke — main lever reduced by 24%, release lever by 14%
• 20.8mm range of reach adjustment for precise hand-fit tuning
• CFRP (carbon fibre reinforced polymer) composite body and carbon lever blades
• Operates on 4 smooth-action bearings for consistent feel
• Instant Release inner lever with enlarged paddle for quick upshifts
• Textured hood cover for enhanced grip in wet conditions
• Includes pre-lubed OT-SP41 polymer-coated cable housing and polymer-coated stainless steel cable
• Individual lever — sold as a single right-hand unit

Engineering & Materials

The ST-R9100-R body is constructed from CFRP composite — lightweight, exceptionally stiff, and built to withstand the demands of professional racing. Carbon lever blades complete the picture, keeping rotational weight to a minimum. Four precision bearings in the lever pivot deliver a consistent, smooth feel pull after pull, whether climbing, sprinting, or descending.

Shifting & Braking Performance

Shimano's redesigned internal shifting unit reduces the main lever throw by 24% and the release lever throw by 14% compared to the previous generation, enabling crisper, more confident gear changes without repositioning your hand. The Instant Release inner lever features an enlarged paddle so front shifts are just as intuitive as rear shifts. Reach adjusts across a 20.8mm range, letting riders of all hand sizes dial in the exact lever position for maximum control.

Compatibility & Fit

The ST-R9100-R is compatible with Shimano 11-speed mechanical road drivetrains, including Dura-Ace R9100, Ultegra R8000, and 105 R7000 series components. It maintains the same cable pull ratio as previous-generation 11-speed Shimano STI levers (9000, 6800, 5800), making it backward compatible with existing 11-speed setups. Designed for rim brake systems only — not compatible with hydraulic or disc brake configurations. This is the right-hand lever only; for front shifting on a 2x setup, the left lever (ST-R9100-L) is required.