Shimano GRX BR-RX820 Disc Brake Caliper - Hydraulic | Flat Mount - rear

Shimano 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 BR-RX820 disc brake caliper

The GRX BR-RX820 hydraulic caliper stands for superior braking power in difficult terrain. Thanks to improved dosing and a faster-gripping pressure point, Gravel bikers experience a completely new feeling of control. In addition, the Flatmount disc brake caliper is quieter and easier to maintain than ever before, despite its flatter design. While a 10 % increase in brake pad spacing reduces noise, the proven One Way Bleeding system makes servicing easier.

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.

Material:
caliper: aluminum (painted)
pistons: resin

Compatibility:

• brake lever: BL-RX810-L, BL-RX600-L, BL-RX820-L, BL-RX610-L
• STI lever: ST-RX820-L/R/LA, ST-RX810-L/R/LA/LE, ST-RX815-L/R, ST-RX610-L/R, ST-RX600-L/R, ST-RX400-L/R, ST-R9270-L/R, ST-R9120-L/R, ST-R9170-L/R, ST-R8170-L/R, ST-R8020-L/R, ST-R8025-L/R, ST-R8070-L/R, ST-R7120-L/R, ST-R7170-L/R, ST-R7020-L/R, ST-R7025-L/R, ST-4720-L/R, ST-4725-L/R
• sub brake lever: BL-RX812-L/R
• brake disc: RT-CL900, RT-CL800, RT-MT900, RT-MT905, SM-RT900, RT-MT800, SM-RT800, SM-RT99, SM-RT99-A, SM-RT86, SM-RT81, SM-RT76, SM-RT70, SM-RT66, SM-RT64, SM-RT56, SM-RT54, SM-RT30, SM-RT26, SM-RT10, RT-EM910, RT-EM900, RT-EM810, RT-EM800, RT-EM600, RT-EM300
• brake pads: K03S-RX, K05S-RX, L03A-RF, L05A-RF, L04C-MF
• brake hose: SM-BH90-JK-SSR

(manufacturer recommendations, list not exhaustive)

Weight (manufacturer's specification):
approx. 146 / 136 g (front / rear)

Scope of supply:

caliper incl. L05A brake pads (resin, Ice-Tech)

• Option A (front): incl. adapter (for 160 mm brake disc)
• Option B (rear): for 25 mm brake caliper mount (without adapter)