STD main bearings Mazda B1 (1.3L, 1.5L, 1.6L) 1138cc full groove ACL ACL-5M8354-STD

STD main bearings Mazda B1 (1.3L, 1.5L, 1.6L) 1138cc full groove ACL ACL Race is designed to operate in the most extreme conditions and the most demanding engines. Thanks to many years of experience in manufacturing bushings, each set is perfectly matched to the engine. The advanced technological process allows the bushing to adapt to the deformation caused by high revolutions and helps to produce hydrodynamic oil films. : STDX -0.025 mm (looser than nominal) STD +0.000 mm (nominal) +0.025 mm (tighter than nominal) +0.25 mm (first shaft grinding) +0.50 mm (second shaft grinding)