BRAVO® REINFORCEMENT SPACER BLOCKS are a great addition to your Mercruiser Bravo® drive in high performance applications as it helps prevent the upper unit internal wear pads from collapsing during sharp turns at high speeds. These spacer blocks are made of hard-coat solid aluminum billet and are precision machined to fit between the Bravo® wear pads. Complete the easy to follow instructions using the Latham Tool Kit (sold separately), and convert this hollow cavity in your stock Bravo drive to a solid block of aluminum. These kits are available for both standard Bravo I and the Bravo Sportmaster.