This is Wilwood PN 260-11179, an adjustable aftermarket proportioning valve. It's used to adjustably lower the amount of hydraulic pressure that gets sent to the rear brakes. That makes them lock ...

Read the Chevy High-Peformance technical article on installing and tuning a brake proportioning valve, brought to you by the experts at Chevy High Performance Magazine.

Honda suspects that there might be mis-assembly of the Brake Proportioning Valve in these units, which were produced between 28th February 2013 to 16th January 2014. Owners of the Brio E, EX, S, and V ...