COBRA Dragsters 3621 M109R Easy installation. Cobra Dragsters are the perfect update to traditional drag pipes. Retaining the clean, pure drag-pipe appearance that has made drag pipes so popular over the years, Dragsters incorporate full-length heat shields that do not turn blue. They are capped off with machined and chromed billet tips. Offered in the classic staggered configuration. While heat can be a wonderful thing, it's not all that great for the chrome on your exhaust system. That's why our heat shields are so important. These full-length, 2.5-inch heat shields with a 222-degree wrap around keep your pipes looking great with a non-bluing appearance. They allow your exhaust system to retain its deep shine and finish without changing color or looking like you took a torch to it.