Stainless Steel 4 into 1 Merge Collectors
1-3/4" Primary's into 3" Collector Outlet

Aeroflow's 4 into 1 merge collectors are made out of T304 stainless steel that is durable enough to stand up to the elements and combine high flow and high velocity to increase and broaden an engines torque curve. The hand porting inside the collector ensures unrestricted, smooth exhaust flow to prevent power loss and excessive backpressure.