In addition to Grand Rocks renowned chromed stacks, we also offer the elegance of a black finish stack.These are semi-gloss, powder coated stacks with a heat rating up to 500 degrees Fahrenheit.** Black Series Stacks are not recommended to be used on trucks equipped with emission-controlled devices (DPF’s) as exhaust temperatures exceed the 500 degree Fahrenheit rating. **Currently available in 5” diameter 36”, 48”, and 60” lengths, and your favorite top styles, Miter Cut, Curved, Aussie, or West Coast Curved!** Other diameters, lengths, and styles available by special request. **