High Pressure Cylinder Rings™

Ultimate Sealing Under Extreme Pressure

Our High Pressure Cylinder Ring System is a race-proven head sealing solution designed for engines running extreme boost, high compression, or nitrous. Unlike traditional gaskets, this setup uses precision-machined stainless rings that bite into both the block and cylinder head, forming a near-bulletproof seal that won’t lift — even under the most punishing conditions.

Technical Advantages:

• Mechanical Seal Technology
  Machined metal rings interface directly with receiver shelf in the Ultra HD Sleeve Block, providing unmatched clamping force and sealing integrity.
• Boost & Combustion-Proof
  Built to handle high cylinder pressures without deformation or failure — ideal for high-horsepower turbocharged, supercharged, or nitrous-assisted builds.
• Reusable Design
  Unlike traditional gaskets that crush and deform, these rings can often be reused after inspection, reducing long-term maintenance costs.
• Custom Fitment
  Available for a variety of bore sizes and head configurations. Perfect for sleeved blocks, CNC-ported heads, and custom engine builds.

Recommended For:

• Extreme boost or high compression setups
• Drag racing, road racing, and competitive motorsports
• Engines with a history of head gasket issues under load
• Builds exceeding the limitations of MLS or copper gaskets

Why Upgrade?
When your build demands the strongest possible head seal, the High Pressure Cylinder Ring System delivers. It’s the same tech trusted by top-tier race teams and engine builders when failure simply isn’t an option.

Fits:

• B18 :81mm-85.5mm
• K24: 86mm-89.5mm

HPCR standard gasket thickness is .060; if you are looking for a different thickness call or email to place an order!