Coming soon to a Duramax near you!
We're working hard on R&D'ing a new SAS kit for the 2011-2018 DMAX. We are trying to finalize a couple of things before we release our 6" kit. It shouldn't be much longer. Please, be patient with us.
We will make a post on our Instagram and Facebook pages as soon as it is available for sale so keep an eye out!