ARP L19 Conrod Bolt Option:

L19 Bolts are available for certain conrods at additional cost - please ask if your interested in upgrading to L19.

ARP2000: An exclusive, hybrid - alloy developed to deliver superior strength and better fatigue properties. ARP2000 is capable of achieving a clamping load at 220000 psi.

L19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material when compared to ARP2000 and is capable of delivering a clamp load at 260000 psi.