Hello and thanks for checking out this listing of a SINGLE right/rear Shimano GRX ST-RX400 mechanical STI shift and hydraulic brake lever with matching GRX BR-RX400 flat-mount hydraulic disc brake caliper! I discovered these kits in the back stock of a small high-end frame builder and they will come to you in the brand new condition seen in the included photographs.

The included lever is for use with *MECHANICAL* 10-speed drivetrains and *HYDRAULIC* disc brakes. The matching GRX BR-RX400 hydraulic disc brake caliper with resin pads is specifically designed for flat-mount frames.

This kit will come with a single right lever, rear brake, 1700mm hydraulic hose, shift cable & housing, and associated hardware & fittings pre-bled for quick & easy installation to your compatible bike.

I have a small handful of these kits available, each is in the same mint, new-in-box condition as the one seen in the included photographs.

Enjoy FREE SHIPPING on this kit within the USA and FROM the USA!

Please contact me with questions, I am happy to answer them. Review my feedback and buy with confidence. Thanks again!

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