Collection: NPR Piston Rings and Pistons Canada - Authorized Dealer - My Parts Guy

NPR (Nippon Piston Ring) is a Japanese original-equipment manufacturer specializing in the sealing and wear components at the heart of an internal combustion engine. Its catalogue centres on piston rings, pistons, cylinder liners and valve seat inserts, produced to the same tolerances used on factory engine assembly lines. NPR rings and liners are a common choice for engine rebuilders working on Japanese and import engines where OE ring tension and cylinder bore finish matter for oil control and compression. The line covers both standard and oversize service sizes for machining work. My Parts Guy ships NPR pistons and ring sets across Canada, priced in CAD.