NPR Piston Rings For Mazda MX-5 NA NB 1.8. NPR is a brand of Nippon, the oem manufacturer for most japanese automotive parts.
These rings are OEM replacement, file to fit rings that allow you to achieve the gap you need.
|Diameter||Cylinders||Comp. Rings||Oil Rings|
|Ring Type||Groove||Ring Material||Surface Treatment|
|Top||1.50 mm||Grey Iron||Phosphate|
|2nd||1.50 mm||Grey Iron||Phosphate|
|1st Oil||3.00 mm||Steel Rail/Stainless EXP||Chrome Rail|