Supertech Performance Block Guard for Honda Engines

The Supertech Performance Block Guard (also called a cylinder wall support or open-deck block support) strengthens the cylinder walls in Honda engine blocks built for high-performance, racing and turbocharged use. It fills the gap between the outside of the cylinder wall and the rest of the block. The added rigidity reduces cylinder wall flex, which helps prevent cracking under high cylinder pressure and high RPM.

Key Features:

• Supports highly stressed cylinder walls to improve durability in high-output builds
• Designed to leave enough coolant flow in critical areas, which helps avoid destructive cylinder hot spots
• Made from high-strength, corrosion-resistant 6061 aluminum alloy
• Computer designed and CNC machined for accurate fit and easy installation
• Designed and tested in many engines by Supertech Performance
• A cost-effective alternative to sleeving the block for many builds

Supertech Performance has over 30 years of experience supplying racing-grade valves and valvetrain components. It serves drag racing, road racing, rally and other motorsports. Choose the block guard that matches your engine family from the available options.