Orignally designed by us to make sure that we achieve the absolute best from a log style manifold for the history see http://harrismarine.co.nz/bbpress/topic.php?id=106
Both the riser and outlet can be angled to suit most applications and are "O" ring sealed, The inside ports progressively get larger as the water is introduced giving the best exhaust gas flow possible.
These fit all of the Lexus engines
