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Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers
Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers
Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers
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Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers 1
Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers 2
Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers 3

Shimano GRX ST-RX610 Shifters w/ BR-RX400 Hydro Calipers

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Mfg PartNum:
MSRP: $324.99-$339.99
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Comfort For The Long Rides

GRX's redesigned ST-RX610 Levers w/ BR-RX400 Hydro Calipers feature textured hoods and an anti-slip brake lever coating that bolsters control on rugged terrain. Shimano have updated its 600-series cranks and shift levers for 1x12 and 2x12 setups that utilize trickle-down technology from the original 800 series GRX component line. Adding 12-speed shifting without any additional lever bulk, the RX610 series shifters are designed for all-day comfort when using flared drop bars, a gravel cycling staple. By reducing pressure points and increasing surface area, your hands will feel less fatigued, and you'll be better in control as you test your limits.

The new GRX shift/brake levers offer light and responsive mechanical 12-speed shifting. While the left lever of the UNDROPPABLE 2x12 GRX group delivers Shimano's unrivaled smooth front shifting, the new 1x12 groups carry over functions for the left lever first introduced with the original GRX: a brake lever-only model and a dropper-specific option that seamlessly integrates braking and dropper post actuation.

The Next Generation Of Gravel

With the introduction of Shimano GRX RX820 12-speed mechanical components, SHIMANO continues its legacy of innovation as the originator of gravel-specific components. Rooted in simplicity, reliability, and adventure, the new 12-speed GRX lineup delivers more gearing options along with unrivaled ergonomics so riders get the most out each unpaved adventure, wherever that might be. With a focus on the heart and soul of gravel cycling, Shimano mechanical GRX receives this 12-speed upgrade delivering top-tier performance without an over-the-top price. And since gravel is all about personal expression and freedom to choose how and where to ride, Shimano GRX includes three unique 12-speed mechanical drivetrain personalities to cover the full spectrum of riders and rides.


  • Gravel-specific brake lever and bracket ergonomics
  • Anti-slip coating on brake lever surface
  • Light and responsive mechanical shifting
  • 611 grams (2x12 pair)
  • 542 grams (1x12 pair)
  • Brakes include L05A Resin Pads

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Right Shifter/Rear Brake - 12-Speed

Mfg PartNum: IRX6101DRRDSC170A 

Shifter Type: Drop Bar 

Left Shifter/Front Brake - For 2x

Mfg PartNum: IRX6101DLF6SC100A 

Shifter Type: Drop Bar 

Front Brake Lever - For 1x

Mfg PartNum: IRX6102DLF6SC100 

Shifter Type: Drop Bar 

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