Optimize your 89-90 Nissan 2.4L/2389 L4 KA24E with the Enginetech RMNI2.4EP Premium Re-Ring Kit. This premium kit delivers top-quality components for a reliable engine overhaul. Includes premium piston rings (C89174), rod bearings (BB1209), main bearings (BC2209), lower gasket set (NI2.4CS-A), and head gasket set (NI2.4HS-A). Free shipping included. Note: Kit photo is generic; actual parts shown individually. Rod and Main bearings are offered as the same size. Contact us for different sizes.