Shimano GRX Front Hydraulic Disc Brake Kit – ST-RX600 Lever (Left) + BR-RX400 Caliper J-Kit – Black
Original price was: 271,99€.179,90€Current price is: 179,90€.
Shimano GRX Front Hydraulic Disc Brake Kit – ST-RX600 Lever (Left) + BR-RX400 Caliper J-Kit – Black
Ensure maximum stopping power and complete front-end control for your Gravel or All-Road bike: discover the Shimano GRX Front Hydraulic Disc Brake Kit (ST-RX600 Lever + BR-RX400 Caliper)—now on special offer for just €179.90 down from €271.99 with Free Shipping across Italy. Supplied in a convenient J-Kit Direct configuration (including a 1000 mm front hydraulic hose and an 1800 mm shift cable), this kit pairs the anti-slip ergonomics of the ST-RX600 left lever with the stopping power and heat dissipation of the BR-RX400 Flat Mount caliper equipped with finned Ice-Tech resin pads.
Free Shipping Promotion: Complimentary delivery included for all orders across Italy
Easy-to-Install J-Kit Direct System: Pre-bled hydraulic system that simplifies routing the hose through the fork
Gravel-Specific Ergonomics (ST-RX600): Textured anti-slip lever body with a raised pivot point for effective braking lever action even from the hoods
Advanced Heat Dissipation (Ice Technologies): Resin brake pads equipped with cooling fins to prevent heat buildup on long descents
Complete Front Kit: Includes a 1000 mm hydraulic hose and an 1800 mm shift cable ready for installation
2 in stock
Description
Shimano GRX Front Hydraulic Disc Brake Kit – ST-RX600 Lever (Left) + BR-RX400 Caliper J-Kit – Black
Ensure maximum stopping power and complete front-end control for your Gravel or All-Road bike: discover the Shimano GRX Front Hydraulic Disc Brake Kit (ST-RX600 Lever + BR-RX400 Caliper)—now on special offer for just €179.90 down from €271.99 with Free Shipping across Italy. Supplied in a convenient J-Kit Direct configuration (including a 1000 mm front hydraulic hose and an 1800 mm shift cable), this kit pairs the anti-slip ergonomics of the ST-RX600 left lever with the stopping power and heat dissipation of the BR-RX400 Flat Mount caliper equipped with finned Ice-Tech resin pads.
Free Shipping Promotion: Complimentary delivery included for all orders across Italy
Easy-to-Install J-Kit Direct System: Pre-bled hydraulic system that simplifies routing the hose through the fork
Gravel-Specific Ergonomics (ST-RX600): Textured anti-slip lever body with a raised pivot point for effective braking lever action even from the hoods
Advanced Heat Dissipation (Ice Technologies): Resin brake pads equipped with cooling fins to prevent heat buildup on long descents
Complete Front Kit: Includes a 1000 mm hydraulic hose and an 1800 mm shift cable ready for installation
📖 DETAILED DESCRIPTION
The front kit consisting of the Shimano GRX ST-RX600 (Left) lever and the BR-RX400 (Front) caliper offers optimal braking modulation to confidently tackle challenging descents and unpaved terrain.
Ergonomics & Modulation of the ST-RX600 Lever
The left GRX ST-RX600 Dual Control shifter was engineered specifically for off-road demands. The anti-slip hood surface ensures a secure grip even in water, mud, and dust. The lever pivot point is positioned higher compared to traditional road controls, enabling strong braking power with minimal hand fatigue when riding on the hoods.
Braking Performance & Cooling with BR-RX400
The 2-piston BR-RX400 Flat Mount front caliper delivers powerful and progressive braking force across all road surfaces. The use of finned resin pads dissipates heat rapidly, maintaining consistent lever feel during extended braking. Additionally, Shimano's J-Kit (Joint-Kit) technology ensures a clean, hassle-free routing process through the fork legs.
📦 WHAT'S IN THE BOX
1x Shimano GRX ST-RX600 Left Shift/Brake Dual Control Lever (2-speed / Double)
1x Shimano GRX BR-RX400 Front Disc Brake Caliper (Flat Mount)
1x Shimano SM-BH90-JK-SSR Hydraulic Hose 1000 mm (pre-bled)
1x Shimano Shift Cable 1800 mm + outer casing
1x Pair of Finned Resin Brake Pads (Ice-Tech)
Flat Mount front disc adapter (140/160 mm) and mounting bolts
📊 TECHNICAL SPECIFICATIONS TABLE
| Feature | Product Specifications |
| Brand | Shimano |
| Group / Series | Shimano GRX |
| MPN / Part Number | IRX4001LF6SC100A |
| Shifter / Lever | ST-RX600-L (Left / Front Dual Control) |
| Brake Caliper | BR-RX400-F (Front, 2-Piston) |
| Caliper Mount | Front Flat Mount |
| Mounting System | J-Kit (Joint Kit Direct) |
| Hydraulic Hose Length | 1000 mm |
| Shift Cable Length | 1800 mm |
| Included Brake Pads | Finned Resin (Ice-Tech) |
| Brake Fluid | Shimano Mineral Oil |
| Color | Black |
| Recommended Use | Gravel, Bikepacking, Cyclocross, Road Endurance |
❓ FREQUENTLY ASKED QUESTIONS (FAQ)
Q: What is Shimano's J-Kit (Joint-Kit Direct) system?
R / A: J-Kit is a system where the hydraulic hose and lever are pre-bled with mineral oil and sealed. This allows you to route the hose internally through the fork or frame without losing fluid before final attachment.
Q: Is the front disc rotor adapter included?
R / A: Yes, the front caliper comes complete with a reversible Flat Mount plate/adapter compatible with 140 mm or 160 mm rotors along with mounting hardware.
Q: Is free shipping valid for all of Italy?
R / A: Yes, free shipping for this item is included in the purchase price for all delivery destinations within Italian national territory.






