fastest speed record on utah's bonneville salt flats

It provided the most efficient way to extract expended gases out of the combustion chamber and move fuel into it. The design of the land speed racing pipe was integral to the performance of the Panhead high performance engine.

To support and the 5 Ball Racing team, Damp D Performance Exhaust produced a stepped pipe design that starts out at 1 3/4 inch and increases to 1 7/8 to 2 inches and flares into a 2 1/8-inch pipe diameter. “Dave Rash, President of Damp D Performance Enterprises, consulted with Berry Wardlaw of Accurate Engineering, our 120-inch Panhead engine builder, on the design and flow of the heads to come up with the best possible formula.”

“We couldnt have done it without Damp D,” said Keith Ball, owner of. Valerie rode a motorcycle sponsored Damp D Performance Enterprises and built by when she set the AMA record in the 2000cc V-twin pushrod class. Land speed racer Valerie Thompson set a national record when she ran the Salt Shaker, the worlds fastest Panhead, 141.4 mph at the 3rd annual International Motorcycle Speed Trials by BUB held September 3-7 at the Bonneville Salt Flats in Utah.

Fastest speed record on utah's bonneville salt flats