Jerry Branch
the man behind the name

Welcome to Branch Flowmetrics, the home of Legendary Performance in the American V-Twin market. Jerry Branch is an industry legend when it comes to Harley-Davidson engines. From AMA Grand National Dirt Track racing, to the high banks of Daytona Speedway, to the best performing stock based engines for the street, Jerry's name is at the top of the list of master tuners who know how to make Harleys perform.

Jerry has applied his magic touch to the current Twin Cam 88 engine. From a bone stock Dyna with a power rating of 63.6 horsepower, you'll get 100 plus hp using Branch Heads and Cams, Dyna Ignition, a Mikuni HSR45 Carburetor, and a performance exhaust system like the White Brothers E Series Exhaust. That's an incredible 57% increase in power -reliable long term power using proven components!

If you’ve talked to Jerry or read his books, you know he tells it as it is! For owners of Harleys with early Electronic Fuel Injection (EFI), Jerry has been advising that modified heads will not provide a cost effective performance increase because the stock EFI throttle body and manifold are too restrictive. But now, with the new high flow version EFI on the 2001-2002 Softail & 2002 Touring Dressers, we are able to achieve 100+ torque and horsepower!

Just imagine the excitement and satisfaction of riding a bike with the power to pass safely and with ease. To cruise at high speed with a passenger and a full load of luggage.

Above and below, Jerry Branch is known world-wide for his pioneering work on the flow bench with Harley-Davidson heads.

Branch Flowmetrics employs the latest Flow Bench and Dyno Room equipment for development and testing. Below: Steve and Jerry evaluate an engine from the dyno control room..

To beat your buddies on their Harleys, or to have a Buell that will run with the best sportbikes. All it takes is a call to Branch Flowmetrics!