Carrillo CPN-3209 Piston Ring Set 81.5mm Bore for Performance Engines

The Carrillo CPN-3209 is a high-performance piston ring set designed for 81.5mm (3.209") bore pistons. This premium ring pack is engineered for use with CP-Carrillo performance pistons and is compatible with popular sport compact engines including Honda B16, B18, and Toyota 4A-GE applications.

Technical Specifications:

• Bore Size: 81.5mm (3.209 inches)
• Ring Thickness: 1.0mm top ring, 1.2mm second ring, 2.8mm oil ring
• Material: Gas nitrided steel compression ring with cast iron second ring
• Package includes rings for one piston
• Compatible with CP piston part numbers: SC7001, SC7101, SC7006, SC7106, SC7011, SC7016, SC7111, SC7116, SC7116X, SC7136, SC7611, SC7601, SC7024, SC7650, SC7653, SC7656, SC7659

Performance Features:

• Gas nitrided steel top compression ring provides superior durability and wear resistance
• Cast iron second ring features a taper hook groove face that functions as a wiper, effectively pushing oil away from the combustion chamber
• Oil ring assembly consists of two gas nitrided rails with a low-tension expander for optimal oil control
• Mini flex vent design reduces friction on cylinder walls for enhanced engine performance
• Precision engineered for high-performance and racing applications

This ring set is designed specifically for aftermarket CP-Carrillo performance pistons and is not compatible with OEM pistons. The advanced materials and engineering deliver improved compression sealing, reduced oil consumption, and enhanced durability under high-stress operating conditions. Replaces OEM part numbers 21-GNH08150, 8150XX, and GNH8150.