1 7/8" Primary 4 into 1 Performance Merge Collector-16ga 321ss

Performance Slip-On Merge Collectors: 1 7/8" 4 into 1- 16ga (.063")

Our 4 into 1- 16ga (.063") merge collectors are machined and hand fit to perfection. From there they are purge tig welded and blended for optimal flow. This smooth transition maintains exhaust velocity, improving volume to efficiency. Available in a variety of merge sizes. This 1 7/8� primary 4 into 1- 16ga (.063") merge collector comes with the inlets expanded to accept a 1 7/8� primary tube. If you would like to add collector tabs to your custom collector, let us know in the order comments at checkout.

These 321 Stainless Steel Merge Collectors are ideal for any high boost or heavy nitrous application due to the improved metal qualities not found in other types of 300 series stainless steel.

Collector Outlet Options:

• Base Exit: Ends at the merge point, select your merge size.
• Straight Exit: The exit size matches the merge size, the outlet is 6" long, and welded to the collector base
• Transitional Exit: The exit size is larger than the merge size, this creates a venturi effect, improving exhaust velocity, and volumetric efficiency. These are 6" in length. We typically recommend the collector exit size be 1/2" larger than the merge size.

Transition exit size option is for transition exit collectors only.

If your desired dimensions are not shown, please call us at our toll free shop line 1-800-290-3920