Carrillo CPN-3090 Piston Ring Set Bore - 78.5mm

The Carrillo CPN-3090 is a high-performance piston ring set designed for 78.5mm (3.090 inch) bore pistons. These precision-engineered rings are part of CP-Carrillo's CPN series, specifically developed for small bore and sport compact engines with higher cylinder pressures that demand superior sealing power.

Ring Package Specifications:

• 1.0mm gas nitrided steel top compression ring
• 1.2mm taper hook groove (THG) Napier style second ring
• 2.8mm low tension flex vent oil ring
• Bore diameter: 78.5mm / 3.090 inches

Key Features:

• Gas nitrided top ring compatible with Nikasil and cast iron cylinder bores
• Scuff resistant coating for maximum efficiency without blemishing the bore
• Taper hook groove second ring acts as a wiper to push oil away from combustion chamber
• Low tension oil ring with mini flex vent design reduces friction on cylinder walls
• High strength, low tension design provides optimum sealing with minimum drag
• Extended life and protection under extreme conditions

CP-Carrillo ring sets are manufactured in the USA from premium materials using advanced computer modeling and 5-axis machining technology. These rings are compatible with modern cylinder materials and are ideal for high-performance automotive, powersports, and marine applications. Sold as a single cylinder set.