Know the landed cost before you order
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Choose the collector outlet for your exhaust
Keep 1-7/8-inch primary tubing and finish the header with a 3-1/2-inch outlet using Kooks 9906S. The 304 stainless collector combines a four-into-one design with the patented scavenging spike.
SKU: 9906S
Match the primary slip fit
The 1-7/8-inch inside-diameter inlets slip over matching outside-diameter primary tubes. The outlet is 3-1/2-inch outside diameter, a separate dimension to match to the connecting exhaust.
One collector with its securing tabs
Each item includes one collector and two A/B-style tabs to secure it to the primaries. Order the quantity required for your fabricated header layout.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKU | 9906S |
| Application | Custom header fabrication; single collector |
| Primary inlet diameter | 1-7/8-inch inside diameter; slips over matching outside diameter primary tubes |
| Collector outlet diameter | 3-1/2-inch outside diameter |
| Collector design | Four-into-one with patented scavenging spike |
| Included | Two A/B-style tabs to secure collector to primaries |
| Material | 304 stainless steel |
Frequently asked questions
How does this differ from 9905S?
9906S has a 3-1/2-inch outside-diameter outlet; 9905S has a 3-inch outlet. Both use 1-7/8-inch primary inlets.
Are the securing tabs supplied?
Yes, two A/B-style tabs are included per collector.
