NPR SWC10026-2 Piston Ring Set

The NPR SWC10026-2 is a piston ring set manufactured by NPR of America (Nippon Piston Ring), a globally recognized OEM and aftermarket supplier of precision engine components. The -2 suffix in NPR's part numbering system denotes an oversize specification, making this set suitable for engine rebuilds requiring a larger-than-standard bore diameter.

Key Features:

• Manufactured by NPR of America, a wholly owned subsidiary of Nippon Piston Ring Co., Ltd., supplying OEM and aftermarket customers since 1973
• Engineered to seal combustion gas, control lubricating oil, dissipate heat, and prevent wear and seizure under demanding operating conditions
• Produced using advanced materials including high-alloy steel and cast iron with precision surface treatments such as nitriding and chrome plating for enhanced wear resistance and durability
• Steel ring construction offers reduced radial wall thickness for improved sealing against the ring groove and better conformity to cylinder bore conditions
• Designed and tested to OEM specifications, with each ring set developed in cooperation with engine manufacturers to ensure proper fit and performance
• Oversize designation (-2) for use in bored or worn cylinders requiring dimensional restoration during engine rebuild

NPR piston rings are manufactured to Japanese Industrial Standard (JIS) B8032-6 and are a trusted choice for professional engine rebuilders seeking OEM-quality components. This ring set is part of NPR's extensive catalog of piston rings and pistons for domestic and import engine applications.