Whether you are a one-man machine shop, a car collector working on custom jobs, or an automotive pro, optimizing the performance of car, motorcycle, or truck engines means having powerful tools on hand. Rottler, a leading name in automotive machine tools, offers a range of solutions used by professionals, hot rodders, and dedicated car aficionados. Rottler revolutionized automotive machine tools with its invention of the first portable boring bar, which allowed for remote repair of vehicles for the first time. Today, Rottler remains a go-to name for anyone in the market for automotive machine tools and accessories. Use a Rottler boring bar to re-bore the cylinders in your engine and optimize performance in anything from a big V8 block to a smaller diesel block. A Rottler valve refacing machine can ensure a tight seal in your intake and exhaust valves, optimizing the combustion process and getting the most power possible out of your vehicle. Both new and used Rottler products are available from the sellers on eBay, so take a look and find a reliable solution for your car shop or garage needs.