Rapp Fabricating, Inc is dedicated to building powerful and durable headers. We offer a wide variety of pipes for every karters needs. Learn more. Products We can custom build any type of pipe you require. Give us a call to discuss your options and get a Free Quote. If you can think it, we can build it! Learn more. Rapp Fabricating, Inc only works with the authorized dealers. Any one of our Dealers will be happy to help you with your header product needs. Learn more. We have always kept up with the newest technology and manufacture the latest and greatest headers being raced. We have been building headers since 1984. Our company was originally started to support our own racing efforts. Although we are no longer racing ourselves, we still take great pride in watching our headers win races.