Machined from a proprietary billet aluminum material, MGP rods feature massive strength, durability, and precision in a lightweight package. Unique features such as full radial serrations ensure zero cap movement in the most demanding environments and a proprietary MGP “Hard Bore” small-end process reduces wear and bore deformation. Diamond stocks several MGP aluminum rods for popular small-block, big-block, and sport compact applications but fully custom rods can be ordered with industry-besting lead times.