What is the purpose of piston rings?

Piston rings serve three main functions: they seal the combustion chamber to maintain compression, they transfer heat from the piston to the cylinder wall, and they regulate engine oil consumption. Proper ring function is essential for engine performance and longevity.

Are these rings compatible with pistons other than Wiseco?

These rings are specifically developed to provide ultimate performance and sealing with Wiseco's wide variety of 4-stroke pistons. While they may fit other pistons, optimal performance and sealing are best achieved when used with matching Wiseco pistons.

What does the .9mm X 1.5mm sizing refer to?

This refers to the dimensions of the piston rings. The first number, .9mm, is the thickness of the top compression ring, and the second number, 1.5mm, is the thickness of the second ring. These specific sizes are designed to work with certain Wiseco piston profiles.

Specifications

Brand: Wiseco
Part #: 7800YBZ

Wiseco 78.00mm Ring Set .9mm X 1.5mm

Name: Wiseco 78.00mm Ring Set .9mm X 1.5mm
Brand: Wiseco
Price: 117.72 USD
Availability: InStock

$117.72

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Fits 2016-2022 Husqvarna FC250. Wiseco 78.00mm Piston Rings (.9mm X 1.5mm) designed for optimal sealing and performance.

Key Features

Fits 2016-2022 Husqvarna FC250, 2021-2022 Gas Gas EX 250F, 2016 KTM 250 SX-F Factory Edition, and 2016-2022 KTM 250 SX-F.
Piston ring set measures 78.00mm in diameter.
Features a .9mm top ring and a 1.5mm second ring.
Designed to provide optimal compression, sealing, and oil control.
Developed and tested for race-ready performance.
Made to Wiseco's specifications for use with Wiseco pistons.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Wiseco is known for making well-built internal engine components, and these 78.00mm piston rings are no exception. They are developed specifically to work with Wiseco pistons, ensuring a solid seal and top performance inside your engine. Whether you're rebuilding your top end or just replacing worn parts, getting the right rings is crucial for how your engine runs. These rings are designed to handle compression, seal the combustion chamber, and control oil, all of which are key to making sure your piston is doing its job effectively.

These rings feature a .9mm top ring and a 1.5mm second ring, dimensions chosen to work with Wiseco's specific piston designs. They are tested for race-ready performance, meaning they are built to withstand the demands of hard riding and competition. When you're putting an engine back together, especially with Wiseco pistons, using their matched rings helps ensure everything works together as it should for reliable power and sealing.