Shimano Brake Shifter Lever Strx400 Lh Left
Shipping Info
Shipping normally takes 3-5 business days. We don't ship on weekends or public holidays.
We offer flat-rate shipping in South Africa. We also offer local pickup from our stores around Cape Town.
International orders carry a minimum spend of R5,500, and takes 7-30 business days to arrive depending on customs.
Bike Size Guide
Choosing the right bike size can be overwhelming, click here to view the general size guide to make things a little bit easier.
Financing Options
Get the bike you want now and pay later with Yonda and Rola Bicycle Finance.
Easy application, fast approval, and tailored repayment plans.
Ride now, pay your way.
What Is It?
The Shimano ST-RX400 Left Hydraulic Brake/Shift Lever is a GRX Dual Control Lever designed for 2×10-speed gravel drivetrains. Combining hydraulic disc braking with front shifting in a single ergonomic unit, it is engineered specifically for gravel, adventure, and mixed-surface riding.
The left-hand lever controls the front derailleur (2-speed) while providing powerful and consistent hydraulic braking using Shimano Mineral Oil. Its gravel-specific ergonomics, textured hood, and reach adjustment deliver excellent comfort and control on rough terrain, whether riding on gravel roads, bikepacking routes, or everyday commutes.
Key Benefits
- GRX Dual Control Lever: Integrates hydraulic braking and 2-speed front shifting into one compact unit.
- Hydraulic Disc Braking: Delivers powerful, consistent braking with excellent modulation in all weather conditions.
- Gravel-Specific Ergonomics: Raised hood profile and textured surface improve grip and control on rough terrain.
- Reach Adjust: Allows the brake lever reach to be adjusted for different hand sizes and rider preferences.
- Light Front Shifting: Provides smooth and reliable operation of Shimano GRX 2x front derailleurs.
- Shimano Mineral Oil System: Low-maintenance hydraulic system with consistent braking performance.
- Premium Build Quality: Aluminium brake lever with an engineering composite bracket for strength and durability.
Specifications
| Specification | Details |
|---|---|
| Product | Shimano ST-RX400-L |
| Series | GRX RX400 |
| Position | Left |
| Brake Type | Hydraulic Disc Brake |
| Shifter Type | Dual Control Lever |
| Front Shifting | 2-Speed |
| Rear Shifting | N/A (Left Lever) |
| Brake Fluid | Shimano Mineral Oil |
| Recommended Brake Caliper | BR-RX400, BR-RX410 |
| Brake Hose Compatibility | SM-BH90-JK-SSR / SM-BH90-J-SSR |
| Reach Adjust | Yes |
| Clamp Diameter | 23.8–24.2 mm |
| Lever Material | Aluminium |
| Average Weight | Approximately 306 g |
Compatible Components
The Shimano ST-RX400-L is compatible with:
- Shimano GRX FD-RX400 2-speed front derailleur
- Shimano GRX BR-RX400 hydraulic brake caliper
- Shimano GRX BR-RX410 hydraulic brake caliper
- Shimano 10-speed GRX RX400 drivetrain components
- Shimano SM-BH90 hydraulic brake hoses
- Shimano Mineral Oil brake systems
Who Is This Best Suited For?
The Shimano ST-RX400 Left Hydraulic Brake/Shift Lever is ideal for:
- Gravel riders
- Adventure cyclists
- Bikepacking enthusiasts
- Cyclocross riders
- Endurance road cyclists
- Mixed-surface commuters
- Riders building or upgrading a Shimano GRX RX400 2×10 drivetrain
- Cyclists seeking reliable hydraulic braking with gravel-specific ergonomics
Compatibility Note: The ST-RX400-L is designed specifically for Shimano GRX 2×10-speed drivetrains and controls the front derailleur only. It is intended to be paired with the ST-RX400-R right-hand lever, FD-RX400 front derailleur, compatible 10-speed Shimano cassette and chain, and BR-RX400 or BR-RX410 hydraulic brake calipers for optimal performance.
