NPR 10-861-2 Piston and Ring Kit Engine Rebuild Set

The NPR 10-861-2 is a complete Piston and Ring Kit from NPR (Nippon Piston Ring), one of the world's most respected OEM and aftermarket engine component manufacturers. NPR's "10-" prefix kits include all the pistons and rings required for a full engine rebuild, providing everything needed in a single, convenient package.

NPR piston rings are engineered to seal combustion gases, control lubricating oil, dissipate heat, and prevent wear and seizure under the demanding conditions of modern engine operation. The rings undergo advanced surface treatments including nitriding and PVD coating to maximize wear resistance and service life.

Key Features:

• Complete piston and ring kit — all pistons and rings for a full engine set included
• Advanced surface treatments (nitriding, PVD) for superior wear resistance and durability
• Engineered to meet or exceed OEM specifications for precise fit and performance
• Steel ring construction offers reduced oil consumption, lower blow-by, and reduced breakage vs. cast iron
• Manufactured to JIS (Japanese Industrial Standard) B8032-6-1998
• Backed by NPR's 5-year / 60,000-mile limited warranty when properly installed

NPR's "10-" series kits are the standard for professional engine rebuilds, delivering OEM-level quality and reliability. Part number 10-861-2 designates an oversize application within the 861 engine family.