Home | Products | Contact Us | Nitrox Systems |

Extension Plates

NOT ENOUGH SET BACK WHEN USING A HYDRAULIC PLATE?

The Extension Plate is structurally designed for use in conjunction with another jack plate. The Extension Plate is mounted directly to the transom of the boat and acts as a spacer to achieve the desired set back. Once the extension plate is mounted to the transom, the jack plate is mounted to the extension plate and the engine mounted to the jack plate. WARNING: Never exceed a total of 15" of combined set back; Always mount an extension plate to the transom of the boat!

HEAVY DUTY EXTENSION PLATE

Hydro Dynamics offers three Magnum (heavy duty) Extension Plates in a 4", 6 " and 8 " set back. These units are custom made and are constructed of 1/2" 6061-T6 Aircraft Quality Aluminum with all stainless steel hardware. These units also feature two massive cross members for super strength and rigidity. Illustrated is a two-piece Magnum Extension Plate.

4" set back (Magnum)
6" set back (Magnum)
8" set back (Magnum)

HDEX-40-HD
HDEX-60-HD
HDEX-80-HD

Max combined set back 12"
Max combined set back 12"
Max combined set back 15"

EXTENSION PLATE MAGNUM WITH CROSS MEMBERS

Extension Plate Magnum with cross members

Units feature twin massive cross members for super strength and rigidity. Extension plates are always to be mounted to the transom of the boat, then the jack plate and your engine to the jack plate.

6" set back (Magnum)
8" set back (Magnum)

HDEX-60-HD-CM
HDEX-80-HD-CM

Max combined set back 12"
Max combined set back 15"

"Chuck Goodman's company, Hydro Dynamics, is probably the best kept secret in the world of outboard performance. Chuck and a small staff run a very specialized shop in the small town of Benton in northwest Louisiana. The shop is dedicated solely to the science of building the parts necessary to propel some of the world's fastest outboards."

Hot Boat Magazine

A World Of Excellence for Twenty-Seven Years