Jim went with SRP forged aluminum pistons with full-floating pins and Howard's forged steel 6.700-inch rods (approximately 790 grams). Why not aluminum rods? Jim says, "It's because of their longevity compared to steel rods. A lot of customers don't want to have to change the rods after 600 runs or tear the engine down in wintertime to take the torque off of the rod bolts so they last longer." The SRP pistons were chosen for their strength and light weight, checking in at 490-500 grams, whereas a TRW stock replacement of this size would weigh 600 grams. Even the SRP pins save roughly 60 grams at 130 as compared to stock at 190.