Performance Racing Industry - Master engine builders Keith Dorton, left, and Jeff Dorton, right, of Automotive Specialists, Inc. in Concord, NC, opened their shop to PRI's Dan Schechner, center. | Facebook
![World Class Engine Builder Keith Dorton Discusses MAHLE Motorsport Pistons & Rings Partnership - YouTube World Class Engine Builder Keith Dorton Discusses MAHLE Motorsport Pistons & Rings Partnership - YouTube](https://i.ytimg.com/vi/bMw2J-yhBrs/sddefault.jpg?v=5c3f7e3e)
World Class Engine Builder Keith Dorton Discusses MAHLE Motorsport Pistons & Rings Partnership - YouTube
![Stream episode Keith Dorton - E7 - Total Seal Piston Rings by Hidden Horsepower podcast | Listen online for free on SoundCloud Stream episode Keith Dorton - E7 - Total Seal Piston Rings by Hidden Horsepower podcast | Listen online for free on SoundCloud](https://i1.sndcdn.com/artworks-OJXNaAOdxW1iZWXC-A8cTXg-t500x500.jpg)