These new rods are available for the 1.8 and 2.0 protege and 1993-95 MX-6 & 93-97 ford probe 2.0 engines. They are a PRO A BEAM design which are constructed from the same material as the best H BEAM rod that Carrillo manufactures, but the manufacturing process requires approximately 20% less machining time. This rod suits the street / hotrod market. They come with Carrillo H bolts. There is no quality like Carrillo Quality!