Vibrant Performance Slip-On Collector Merge Collector 4 into 1 2-1/8" Primary Tubes - 3-1/2" Outlet H770001XXL the MSD Circle Track HEI

the MSD Circle Track HEI is peaked and tuned to provide ultimate reliability and strength to run circles around the competition

Perfect for harsh off road environments

Heat treated to eliminate the chances of damaging cylinder head bosses during installation

has been listening to it's customers

1982-1986 GMC C1500 Suburban

Vibrant Performance Slip-On Collector Merge Collector 4 into 1 2-1/8" Primary Tubes - 3-1/2" Outlet H770001XXL the MSD Circle Track HEIVibrant Performance 4 1 Merge Collectors have a single slip design ideal for naturally aspirated applications, featuring precise cut mandrel bent 304 Stainless Steel tubing with high quality TIG welded construction. Vibrant merge collector expanded inlets are designed to fit perfectly with Vibrant Stainless Steel piping. 4 1 Merge collectors range from 1. 75 to 2. 25 for inlet, and 2. 5 to 4 outlet sizes. 4 1 Merge Collector, 2. 125" Inlet I. D.;