Aeroflow Merge Coll 2-1/4-4" 2-1/4" To 4" 304 Stainless 500 to 600 series Simply remove the barb fitting

Simply remove the barb fitting and screw in one of these AN adapters

PFE842-06-08

RWF-921-06-06BK

5 mm PCD or 170 mm PCD

Aeroflow Merge Coll 2-1/4-4" 2-1/4" To 4" 304 Stainless 500 to 600 series Simply remove the barb fittingPart Number: AF4225 400 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 handporting inside the collector ensures unrestricted, smooth exhaust flow to prevent power loss and excessive backpressure. inlets are all measured inside diameter enabling the tube to easily slip in. outlets are measured