There are a couple of options. I've installed lots of these.
http://cyclebabac.com/en/our-store.h...ategory_id=105

Depending on how much slack you have in your cables, you may need to replace them. More times than not, only the front brake cable needed replacing.
Another option I have not tried is this one.

http://cyclebabac.com/en/our-store.h...ategory_id=105

I'd like to try one as it has quick release adjustment feature.