THS Racing 1/10 Tuned Pipe and Manifold Set designed and tuned for the Traxxas Revo 3.3 RTR PACKAGE INCLUDES: One hard-coated aluminum tuned pipe One hard-coated aluminum manifold Two rubber gaskets with three small metal springs One fuel nipple pressure line One metal tuned pipe holder wire One large manifold spring One 4x4mm set screw (uses a 2mm hex wrench)