NPR SWF20068-1 Piston Ring Set Subaru Oversize - EJ25 99.75mm

The NPR SWF20068-1 is a premium piston ring set engineered specifically for Subaru EJ25 series engines. Manufactured by Nippon Piston Ring Co., Ltd., a leading Japanese OEM supplier with decades of engineering expertise, these rings deliver exceptional performance and durability for high-performance applications.

Specifications:

• Ring bore size: 99.75mm (+0.25mm oversize)
• Ring thickness: 1.2mm x 1.2mm x 2.0mm
• Complete set includes rings for 4 pistons
• Part number: SWF20068-1 (also listed as SWF20068-.25)

Key Features:

• Premium steel construction for superior wear resistance and durability
• Advanced surface treatments including nitriding or PVD coating for enhanced scuffing resistance
• Precision-engineered to JIS (Japanese Industrial Standard) specifications
• Optimized for gas sealing, oil control, and heat dissipation
• Designed for modern high-compression, high-temperature engine operation

NPR piston rings are trusted by engine builders worldwide for their ability to reduce oil consumption, minimize blow-by, and provide reliable sealing performance. These rings undergo rigorous quality control and are manufactured to meet the demanding standards required by OEM applications.