Hello you buy brackets to fit Acura RL (honda legenda) 4 pot Advics calipers .

To upgrade your stock brake to 4 pot From Acura rl calipers you need

1. This brackets kit

2. Brake calipers Front from acura RL 05-12 Left and Right buy separately

3. Brake pads z23-1091 buy separately

4. Brake rotors PowerStop JBR1791XPR buy separately

Fits

 ACURA RDX 2007-2020

 ACURA MDX 2014-2016

 HONDA ACCORD CROSSTOUR 2010-2011

 HONDA CR-V 2007-2016

 HONDA CROSSTOUR 2012-2015

Brake rotors for USA u can buy on ebay or rockauto POWER STOP JBR1791XPR

For EU you can Use this rotors BREMBO, 09D02711