I assume Breakout?
It's not been my experience that stock battery cables are not capable of handling the full current flow of the bikes (or cars) they are installed on. What makes you think your particular bike needs heavier gauge cables?
Stock parts are made to meet the requirements of the stock vehicle. If you don't change the vehicle in such a way as to significantly increase maximum current flow, higher gauge aftermarket parts aren't going to make a difference. If you decide to install a monster high compression engine that requires a much higher capacity starter, then I'd suggest upgrading the cables. I know they love to advertise those high priced aftermarket cables, just like Monster likes to push their high priced aftermarket cables most people don't need, but just because they make claims doesn't mean those claims are true. I'd love to have the money people have thrown away buying overpriced speaker cables, HDMI cables, battery cables, etc. over the years.
Oh, btw, some of those high priced cables do have better materials and production methods for the terminals. That can make some cables worth a bit more than the stock cables in terms of reliability.
Jerry