This line features dedicated forgings, specially designed valve pockets, unique dome and crown designs, optimized skirt profiles and precision machined ring grooves. Other features such as dome brushing, skirt coatings, gas ports, and advanced ring packages will be found on many of these pistons. Wiseco's late model EFI line for Chevrolet LS-based platforms are specially designed pistons built for high boost and nitrous, yet designed to run quietly on the street with a long lifetime.