The connecting rod or conrod connects the piston to the crank or crankshaft. Together with the crank, they form a simple mechanism that converts reciprocating motion into rotating motion. When the cylinder fires, the piston pushes down on the connecting rod, which inturn, causes the crankshaft to rotate. All connecting rods for automotive use need to be lightweight but strong enough to withstand and transmit the thrust from the pistons to an engine’s crankshaft, Speedmaster™ has a wide range of connecting rods ready to fulfill all your engine needs.