Skunk2 Racing 306-05-1210 Alpha Series Connecting Rod Set 137.00mm Length 458 Grams Rated to 500HP H-Beam Lite Rod Incl. 3/8 ARP2000 Bolts/Lube 4340 Chromoly Steel Set of 4 Alpha Series Connecting Rod Set H-Beam Design 4340 Chromoly Steel Precision-Machined