I-beam connecting rods to the most popular engines. I-beam connecting rods can handle more power than the traditional H-beam connecting rods. ZRP connecting rods are delivered in weighted sets with tolerances that only more expensive rods offer. Bearing assembly can be read about here. The ability to also select connecting rod bolts according to purpose provides the best performance per cost that we know when it comes to connecting rods. Connecting rod bolts tightening torque.