Zipper’s Performance is synonymous with horsepower. The company recently released its new catalog for 2010 packed full of plenty of parts to make your bike go faster. It’s now available as a download from the Zipper’s Website here. From complete performance packages to individual parts like cams, heads, cylinders, and more, the 2010 catalog has it all. And if it’s a fuel management system your after, the award-winning Thundermax EFI System w/ AutoTune is available for many Harley-Davidson motorcycles. For more information about Zipper’s Performance Products, visit zippersperformance.com, or call (410) 579-2828.