Carrillo CPN-3563 High-Performance Piston Ring Set for 90.5mm Pistons

The Carrillo CPN-3563 is a high-performance piston ring set engineered for precision and durability in demanding engine applications. Designed to fit 90.5mm (3.563") bore pistons, this single-cylinder ring set delivers the exceptional sealing power and reliability that CP-Carrillo is known for throughout the racing and performance community.

Key Features:

• Bore Size: 90.5mm / 3.563 inches
• Low-tension design minimizes friction while maximizing sealing efficiency
• Gas-nitrided steel top compression ring for superior scuff resistance
• Compatible with Nikasil, Alusil, and cast iron cylinder bores
• Cast iron second ring with taper hook groove face for optimal oil control
• Engineered for high-cylinder-pressure applications in sport compact and performance engines
• Made in the USA with CP-Carrillo's precision manufacturing standards

The CPN series ring sets are specifically designed for smaller bore and sport compact engines that experience higher cylinder pressures and require superior sealing capabilities. The gas-nitrided top ring operates at maximum efficiency without damaging the cylinder bore, while the precision-ground cast iron second ring provides excellent oil control. This single-piston ring set is ideal for engine rebuilds, racing applications, and high-performance street engines where quality and reliability are paramount.