SKUNK2 ALPHA SERIES CONNECTING CON RODS F22CAlpha Rods are forged from select 4340 chromoly steel and feature a straight H beam design, resulting in the ultimate strength to weight ratio. The F22C Rods were designed for both Naturally Aspirated and Forced Induction use and are rated to withstand up to 900 hp. Skunk2 relies on extensive material testing and works closely with its foundry to produce high quality rods at an affordable price. Comprehensive heat treating, tempering, and shot peening