The Shimano Ultegra ST-R8025 is a hydraulic Dual Control Lever specifically engineered for riders with smaller hands. While it shares the same internal "pro-proven" shifting and braking technology as the standard R8020 series, the R8025 features a revised lever blade shape and a closer reach, providing enhanced control and comfort for a more confident riding experience.
Small-Hand Ergonomics: Features a more pronounced outward curve and a shorter reach to the lever blades, ensuring that riders with smaller palms can easily wrap their fingers around the controls for better leverage.
Refined Hydraulic Braking: Offers the same powerful and consistent mineral oil-based braking as the standard Ultegra line, but with a lighter action specifically tuned for easier engagement.
Precision Mechanical Shifting: Utilises Shimano’s vivid indexing to provide a light yet crisp shift feel, allowing for rapid gear changes across the 11-speed drivetrain with minimal hand movement.
Greater Reach Adjustment: Includes an expanded range of reach adjustment via a dedicated screw, allowing you to fine-tune the lever position closer to the handlebar than standard models.
Redesigned Hood Cover: The textured hood provides a secure grip in all weather conditions, with a slimmer profile that reduces hand fatigue on long-distance endurance rides.
Smooth Shifting Internals: Features a redesigned internal shifting unit for quick and intuitive rear shifting, mimicking the effortless "click" found in the higher-end Dura-Ace groupset.
| Feature | Specification |
| Series | Ultegra R8000 |
| Drivetrain Speed | 11-Speed Mechanical |
| Brake Type | Hydraulic Disc Brake |
| Lever Material | CFRP / Engineering Plastic |
| Fluid Type | Shimano Mineral Oil |
| Options | Left Hand (2sp) / Right Hand (11sp) Available |
✅ Riders with Smaller Hands: If you’ve ever struggled to reach your brake levers while in the drops, this lever is a game-changer for safety and comfort.
✅ Confidence in Descents: The refined lever sweep makes it significantly easier to modulate your braking power when descending technical roads or in wet weather.
✅ Mechanical Simplicity: Ideal for those who prefer the tactile feel and easier serviceability of mechanical shifting paired with modern hydraulic disc brakes.
❌ Standard or Large Hand Sizes: Riders with average to large hands may find the tighter ergonomics feel "cramped" and should stick with the standard ST-R8020 model.
❌ 12-Speed Drivetrains: This is a dedicated 11-speed component; it is not compatible with the newer 12-speed Ultegra R8100 groupsets.
Because the ST-R8025 is designed for a shorter reach, it is particularly sensitive to handlebar shape. We recommend pairing these with a "compact" or "short-reach" drop bar to fully maximise the ergonomic benefits. When setting up the hydraulic lines, ensure you use the SM-BH90-JK-SSR high-power hose—using a standard hose will result in a "spongy" feel that negates the precise modulation these levers are famous for!
