Features include a 16-valve cylinder head topped by a red valve cover, dual 48mm Weber carburetors, and twin overhead camshafts. A rebuild was carried out in 2016 that included honing and surfacing the block, polishing the crankshaft, and replacing the cylinder head, bearings, and pistons. The YB inline-four was based on the block used in the Ford Pinto and was first offered to the public in 1986 with the introduction of the Ford Sierra RS Cosworth. This YBM version is a naturally aspirated example with a 16-valve DOHC cylinder head and dual Weber 48mm side-draft carburetors.