Trinity inline pipe set is constructed of blue aluminum, with pressure tap cast into pipe body. Two separate manifolds insure correct fit for all the listed engines The manifold with the smaller flange fits the Traxxas 2.5, Sirio .18 and Fantom .18 engines, the larger flanged manifold fits the Sirio .21, .23, .27 and other big block engines such as the Rossi, Novarossi and others/

Installing on engine