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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Piston Rings

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PRS105
Product Information
Product Information
Ring set for Capricorn aluminium piston P1513
SET OF 6

Size : 105,4 mm
Ring Thickness :
- Top Ring : 1,09 mm
- 2nd : 1 mm
- Oil-Ring : 2 mm

In motorsport, small things often decide about victory or defeat.
In particular, piston rings are among the engine components whose importance is frequently underestimated. In many cases, piston rings of poor quality are responsible for engine damage and / or poor performance.

Capricorn ensures that all parameters are optimally coordinated with each other. The manufacture is exclusively carried out by the most prestigious suppliers with whom they have been successfully cooperating for years and who all have many years of experience in motorsports.

The successful use of Capricorn piston rings in a various racing series and thus changing requirements profiles is an expression of extensive expertise and high product quality.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PRS105
P1513

The product you are viewing cross references to these numbers
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About Piston Rings

Piston Rings – Precision Engine Sealing & Performance for Porsche Models

The piston rings in your Porsche engine are critical components that maintain compression, regulate oil consumption, and ensure efficient combustion. Positioned around the pistons, they create a tight seal between the piston and cylinder wall, keeping combustion gases contained while allowing smooth piston movement.

At Design911, we supply a comprehensive range of piston rings designed for both classic and modern Porsche engines. Manufactured from high-strength, heat-resistant materials, these rings deliver exceptional sealing, reduced friction, and long-term reliability. Whether you’re performing a full engine rebuild or a top-end refresh, our quality piston rings are engineered for perfect fitment and optimum performance.

What Do Piston Rings Do?

Piston rings perform three vital functions within the engine:

  • Sealing the combustion chamber – to prevent gas leakage and maintain compression.
  • Controlling oil consumption – by scraping excess oil from the cylinder walls.
  • Conducting heat – transferring it from the piston to the cylinder wall to prevent overheating.

These rings are essential for maintaining engine efficiency, power output, and longevity. Properly functioning piston rings ensure consistent compression, clean emissions, and smooth performance.

Why Do Piston Rings Fail?

Piston rings are subject to intense heat, pressure, and friction. Over time, these conditions can lead to wear, loss of sealing ability, or even engine damage.

Common Causes of Piston Ring Failure Include:

  • Excessive wear or scoring from poor lubrication or debris.
  • Carbon build-up causing sticking or uneven sealing.
  • Overheating that leads to ring warping or loss of tension.
  • Corrosion or fatigue from oil contamination.
  • Improper installation during rebuilds or maintenance.

Symptoms of worn piston rings include blue exhaust smoke, loss of compression, reduced performance, or excessive oil consumption — all signs that replacement is required.

Why Replace Piston Rings?

Replacing worn or damaged piston rings restores compression, improves combustion efficiency, and protects your Porsche engine from further wear. Our high-performance piston rings are built to withstand extreme conditions, ensuring consistent sealing and reduced friction.

Key Benefits:

  • Restores compression and engine power.
  • Reduces oil consumption and exhaust smoke.
  • Improves fuel efficiency and combustion quality.
  • Constructed from durable, heat- and corrosion-resistant alloys.
  • Direct-fit compatibility for a wide range of Porsche models.
  • Ideal for rebuilds, restorations, or performance upgrades.

Investing in premium-quality piston rings ensures lasting performance, smoother running, and optimal engine reliability.

Highlights:

  • Precision-engineered piston rings for Porsche engines.
  • Restores compression, performance, and oil control.
  • Made from high-strength, wear-resistant materials.
  • Perfect fit for classic and modern Porsche models.
  • Essential for rebuilds and long-term engine health.
  • Ensures smooth, efficient combustion and lower emissions.

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