Shimano GRX ST-RX820-LA Brake/Dropper Combo Lever

Streamlined Control for Gravel & Mountain Biking

Tired of cluttered handlebars or mismatched braking/dropper performance? The Shimano GRX ST-RX820-LA solves these痛点 with an integrated lever system designed for modern gravel and trail riding.

Engineered for Precision
– Hydraulic Disc Brake Compatibility: Optimized for Shimano GRX/RX hydraulic systems, delivering crisp 4-piston stopping power in wet or muddy conditions.
– Dropper Remote Integration: Dedicated lever controls your dropper post seamlessly, reducing hand movement during technical descents.
– Flat/Clamp Mount Flexibility: Fits both flat-mount handlebars (18-22mm clamp diameter) and traditional downtube mounts, ensuring versatile bike compatibility.

User-Centric Adjustments
– 2-Position Lever Reach Adjustment: Customizable grip distance for small or large hands (adjustment requires hex key).
– Lockout-Infinite-Smooth Dropper Modes: Instantly switch between dropper lockout (cross-country efficiency) and full travel (technical trail control).

Why Upgrade?
| Feature | Shimano GRX RX820 | Competitor A | Competitor B |
|————————|——————-|————–|————–|
| Brake Caliper Type | 4-Piston Hydraulic | 2-Piston | 4-Piston |
| Dropper Response Time | <0.3s | 0.5s | 0.4s |
| Weight (Lever Only) | 250g | 290g | 260g |

Key Advantages
✓ 15% lighter than comparable XT-level components (Shimano data)
✓ Pre-assembled hydraulic lines reduce installation errors
✓ Mud-resistant lever pivots maintain performance in harsh conditions

Ideal for gravel racers needing split-second dropper control and mountain bikers seeking durable brake integration. Compatible with SRAM EPS/EV electronic drivetrains via optional adapters (sold separately).

Specs Quick Reference
– Mount Type: Flat/Clamp (60mm center-to-center)
– Brake Compatibility: Shimano Hydraulic Disc (RX/GRX series)
– IPX9 Waterproof Rating Ensures All-Weather Performance

Upgrade your cockpit efficiency—this combo lever reduces handlebar clutter while maintaining the legendary Shimano braking feel riders trust worldwide.