What is the main purpose of piston rings?

Piston rings have three main jobs: sealing the combustion chamber to maintain compression, regulating oil by scraping excess oil from cylinder walls, and transferring heat from the piston to the cylinder wall.

Are these rings compatible with pistons from other brands?

These Wiseco rings are specifically made to Wiseco's specifications for use with Wiseco pistons to ensure optimal performance and sealing. While they may fit other brands, best results are achieved when used with matching Wiseco pistons.

What does the '99.5mm' refer to?

The '99.5mm' indicates the bore size of the cylinder that these piston rings are designed to fit. This is a critical measurement for ensuring a proper seal within the engine.

Wiseco Piston Ring Set 99.5mm 9950XX

Name: Wiseco 99.5mm Ring Set Ring Shelf Stock
Brand: Wiseco
SKU: wiseco-wiseco-99-5mm-ring-set-ring-shelf-stock-t14-243447
Price: 31.99 USD
Availability: BackOrder

Wiseco 99.5mm Ring Set Ring Shelf Stock

$31.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Wiseco 99.5mm Piston Ring Set. Ensures proper compression and oil control for optimal engine performance.

Key Features

Fits 11+ vehicle make/model combinations.
99.50 mm bore size.
Top ring: 1.00 mm.
Second ring: 1.20 mm.
Oil ring: 2.80 mm.
Designed for optimal compression and oil control.

⚠️ 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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Will this fit your vehicle?

Product Details

When you're rebuilding the top end of your engine, getting the piston rings right is crucial for performance and longevity. These Wiseco 99.5mm ring sets are designed to work seamlessly with Wiseco pistons, ensuring a tight seal for excellent compression and effective oil control. They are built to meet the demands of race-ready performance, making them a solid choice for serious engine work.

This set features specific ring groove dimensions: 1.00mm for the top ring, 1.20mm for the second ring, and 2.80mm for the oil ring. This precise sizing is key to achieving optimal sealing against the cylinder wall, which directly impacts how well your engine breathes and how efficiently it burns fuel. Wiseco develops these rings to their own specifications, aiming for the best possible performance and sealing when paired with their pistons.

These rings fit a wide range of vehicles, including popular models like the Dodge Ram 1500, Jeep Grand Cherokee, and Chrysler 300. Make sure to check the fitment details to confirm compatibility with your specific application.