Speed Pro Main Bearing - 0.010 in Undersize - Big Block Chevy Gearshift Crankshaft must be balanced to

Crankshaft must be balanced to match your specific rods and pistons

An anti-skid surface on the top and bottom helps prevent slipping and sliding

Protects Your Transmission from Contaminants during use or storage

This set uses mild steel

Adds A Performance Look To Large Center Ring

Speed Pro Main Bearing - 0.010 in Undersize - Big Block Chevy Gearshift Crankshaft must be balanced toSpeed Pro Main Bearing Set 141M10 Competition Series Main Bearings 0. 010 Undersize Tri Metal 3 4 Groove Chevrolet 7. 4L (Set of 5) Best bronze alloy material Does not have flash tin plating Extreme fatigue resistance & strength 3 4 Grooved Silicon particles help polish crankshaft journal (reduces wear during operation)From pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for