Add this medium size X-Port to your HPI stock exhaust canister or replace your smaller X-Port with this longer X-Port. The X-Port creates a "header" effect when adding it to your stock canister muffler or X-Can. Increased torque and low end power will be noticed.
100% billet aircraft aluminum with built in heat sinks to reduce cylinder temperature. Lower cylinder temperature means a longer lasting motor and more power. Includes all needed hardware and instructions.