SEALED POWER MAIN BEARINGS SBC .030 (Bi-metal aluminum alloy, A-Series) CAN & Tuning Cables - CAN & Tuning Cables 1" Bore Master Cylinder

1" Bore Master Cylinder

P-Series bearings are constructed of tri-metal cast copper lead

59" exhaust valves and have a thicker thanstock

Mazda RX7 Series 7-8

Compatible hose: 100 Series Stainless Steel braid and 450 Series Lightweight Nylon braid

SEALED POWER MAIN BEARINGS SBC .030 (Bi-metal aluminum alloy, A-Series) CAN & Tuning Cables - CAN & Tuning Cables 1" Bore Master CylinderSealed Power MA Series Main Bearings 4663MA30 Main Bearing Set, . 030 in. Over Size, Bi metal aluminum alloy, A Series, Sold as a set of 5. These Sealed Power MA Series main bearings can actually polish the journals on your crankshaft. That's because there's a small percentage of silicon mixed in with the aluminum and tin that make up the bearing surface alloy. The silicon is there for wear resistance, but its toughness actually smoothes the journals