Carrillo CPN-3642 Piston Ring Set Bore - 92.5mm 1.0mm 1.2mm 2.8mm

The Carrillo CPN-3642 is a high-performance piston ring set designed for 92.5mm (3.642") bore engines. This precision-engineered ring pack features CP-Carrillo's advanced CPN series design, optimized for smaller bore and sport compact engines with higher cylinder pressures that demand superior sealing power and minimal friction.

Ring Configuration:

• Top Ring: 1.0mm gas nitrided steel compression ring for maximum durability and scuff resistance
• Second Ring: 1.2mm cast iron Taper Hook Groove (THG) Napier style ring for improved oil control
• Oil Ring: 2.8mm low tension flex vent three-piece oil control ring

Key Features:

• Gas nitrided top ring compatible with Nikasil, Alusil, and cast iron cylinder bores
• Low tension design minimizes parasitic drag while maintaining optimum sealing
• High strength construction for extended life under extreme conditions
• Napier cut second ring acts as a wiper to push oil away from combustion chamber
• Designed for turbocharged, supercharged, and nitrous applications
• Made in the USA with precision manufacturing tolerances

CP-Carrillo CPN ring sets are engineered using sophisticated computer modeling and manufactured with state-of-the-art equipment to ensure consistent quality and performance. The gas nitrided top ring provides a scuff-resistant surface that operates at maximum efficiency without damaging the cylinder bore, while the hooked face second ring delivers superior oil control compared to conventional taper-faced rings.