Clevite P Main Bearings 0.25mm B16A B17A B18A B18B C1 C5 B20B B20Z K20A2 A3 Z1 A1 K24A2 A4 A8

One often overlooked part when building an engine is the bearings. Getting a quality set of bearings can directly determine the longevity of your engine. We use Clevite Race Bearings in many of the race engines we build here.
These bearings are ".25", they are .25mm THICKER than stock. Use this when your crank is cut .010".
P-Series main bearings are the oldest members of the Clevite 77 bearing family and are intended for high-revving engines. To compensate for the high-load factors and distortion in these engines, these bearings have higher eccentricity and a high crush factor. P-Series bearings are built on steel backings with extra-thin overlays to prevent overlay fatigue. In addition, the oil grooves on most applications extend all the way around both halves for better oiling.