Made from a unique lining bonded to an extra strength steel backing for unparalleled durability. Additional Crush and Eccentricity have been incorperated into the design of these bearings ensuring the best in duribility under extreme stress and high RPM. Additional Crush ensures that the bearing is firmly positioned to deter the main journal from spinning the bearing, additional Crush also aids in lowering oil temperature at the bearing surfae to prevent the oil from breaking down. The additional Eccentricity gives additional clearance at the parting line to provide the extra clearance needed between the bearing and journal to prevent the bearing from contacting the crankshaft which can happen at higher RPM when the main journals are most likely to distort.

   The 3/4 Groove Hi-Performance Main Bearing provides the best of both worlds in a  main bearing. The 3/4 groove allows for the most efficient oiling to the journals, yet maintains full surface area in the most heavily loaded portion of the bearing. Crankshafts using the 3/4 grooved main bearings will not need to be cross drilled which will save time and money while improving crankshaft strength.