Our 304 Stainless steel spike vanes are welded to the end of the primary tubes during header fabrication. This smooths the exhaust turbulence at the collector to simulate the benefits of a traditional "slip-on" merge collector.
This spike vane fits 1 3/4" primary tubes.
Sold individually.
Each collector will use (3) for 3 into 1 collectors or of (4) for 4 into 1 collectors.
