Shimano GRX BL-RX610 / BR-RX410 Disc Brake - STI | Flat Mount | J-Kit - left (L) | front (F)

GRX – United in Gravel

Gravel is the great equalizer. No matter who you are, where you come from or where you want to go. Gravel celebrates individuality. It welds together in a shared passion. It lays the foundation for friendships and creates memories for the ages. Whether you ride one kilometer or a hundred. Whether with professional equipment or without. With a 10-speed, 11-speed or 12-speed gear system. Whether on paved roads, forest roads, back roads – or no roads at all. It does not matter why you are out there, all that matters is that you are.

Shimano GRX disc brake set consisting of the BL-RX610 lever and the hydraulic BR-RX410 caliper. Smooth and simple maintenance is ensured by the proven One Way Bleeding system and the Easy Hose Joint System which makes brake hose replacement considerably easier.

Shimano GRX BL-RX610-L brake lever

Gravel for Everyone. With its Gravel-specific ergonomics, the GRX BL-RX610 brake lever stands for unsurpassed comfort on mixed terrain. Whether touring or racing, the structured grip shape combined with the non-slip surface of the brake lever blade noticeably increases control on uneven terrain. The brake lever, which has been optimized for 1-speed drivetrain systems, is adjustable in reach.

Shimano GRX BR-RX410-F disc brake caliper

Thanks to improved modulation and a faster-responding pressure point, the hydraulic 2-piston brake caliper of the RX410 series gives Gravel athletes a completely new feeling of control. The 10 % wider brake pad spacing also reduces the occurrence of annoying brake noise, making the Flatmount caliper noticeably quieter than the predecessor model despite its flatter design.

J-Kit (Easy Hose Joint System) | For brake systems with J-Kit brake hose connection, the brake lever has an integrated squeeze seal (olive), which makes the installation and removal of the brake line much easier overall.

Ice Technologies | In order to keep the braking power at longer continuous operation consistently high, Shimano has developed the Ice-Tech cooling technology for brake discs and brake pads. Brake pads with Ice Technologies feature cooling fins made of aluminum, which better dissipate heat. In conjunction with the optimized radiation properties of the rotor, this results in a longer durability of the pads, while brake noise and fading are minimized.

Technical details:

lever housing: composite
lever blade, caliper: aluminum (painted)
pistons: resin
number of pistons: 2
mounting type: Flatmount
brake pad type: narrow (K / L)
hose connection: straight (lever + caliper)
adjustability: reach (with tool)
bleeding: One Way Bleeding
weight: approx. 543 g (BL-RX610-L + ST-RX610-R; manufacturer's specification)

Compatibility:

brake disc (manufacturer's recommendation): RT-CL700, SM-RT64
brake pads: K05S-RX, L05A-RF, L04C-MF
brake fluid: SM-DBOIL (Shimano mineral oil)

Scope of supply:

brake lever + brake caliper (set, filled and bled), incl. brake pads (L05A-RF, resin, with cooling fins), brake hose (SM-BH90-JK-SSR, 1000 mm) and adapter (for 160 mm brake discs)