I Beam 6.135" 2.200" .990" 5140 Connecting Rods Chevy BBC 454 w/ ARP 2000 The inertia ring rotates harmonically

The inertia ring rotates harmonically with the engine and absorbs the torsion vibration from the rotating assembly at any frequency and RPM

Speedmaster gilmer drive belts are designed to keep your accessory drive operating properly

smoother idle

which consists of a tilt lever

Manufactured from billet steel

I Beam 6.135" 2.200" .990" 5140 Connecting Rods Chevy BBC 454 w/ ARP 2000 The inertia ring rotates harmonicallyThese 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.