NPR of America was established as a wholly owned subsidiary of Nippon Piston Ring Co., Ltd. (NPR) in 1973.

NPR has been supplying Original Equipment Manufacturers and the Automotive After Market with the highest quality internal combustion engine parts, since 1973. They continue to advance into the Twenty First Century by meeting the changing demands of the Original Equipment Manufacturers and Automotive After Market by utilizing extensive product testing techniques to deliver a consistently higher level of performance and lasting quality.

Item Code	SWH30437-4
Product Type	Ring Set
Manufacturer	NPR Of America
Application	UNIVERSAL STREET / RACE
Bore (mm)	85.0
Top-Ring Groove	1.2mm
2nd-Ring Groove	1.2mm
Oil-Ring Groove	2.8mm
Ring Type	Nitrited
Fitment Type	Pre Fit
Oil Tension	Standard
Qty	4 Cylinder Set
Notes	Nitrited - Conventional