I Beam 6.385" 2.200" .990" 5140 Connecting Rods Chevy BBC 454 w/ ARP 2000 Speedmaster billet main caps are

Speedmaster billet main caps are precision CNC-machined from superior-quality 1025 billet steel

The Speedmaster pinion supports are made from the best quality nodular iron

Adjusting the rear band is crucial for optimizing shift quality and transmission performance

They're made from quality materials

I Beam 6.385" 2.200" .990" 5140 Connecting Rods Chevy BBC 454 w/ ARP 2000 Speedmaster billet main caps areThese Speedmsater I beam connecting rods incorporate all of the best features possible for an I beam rod, including some strength adders found in H beam designs. Speedmaster I beam connecting rods are profiled with clearance for long stroke applications. These connecting rods feature a one rib cap design for added strength and bearing support, polished beams to eliminate stress risers.