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Shape the headers around your engine installation
For a custom exhaust that needs 2-inch primaries and 3-1/2-inch collector outlets, Kooks WK2650 supplies the major tube components together. Your fabricator can position the 304 stainless bends around the actual space in your project.
SKU: WK2650
Twelve bends and two collectors
The kit contains twelve JB-200-30-16-304 J-bends and two 9908S collectors. That gives you the primary tubing and collector ends for a pair of fabricated headers. The two 9908S collectors have a four-into-one slip-on design with a scavenging spike, 2-inch inside-diameter inlets and 3-1/2-inch outside-diameter outlets. The inlets slip over the matching primary tubes, ready for your fabricator to position them.
Choose the cylinder-head connection
Two header flanges are purchased separately. Match their port and bolt pattern to your heads, then establish steering, suspension and starter clearance before the tubes are finally welded.
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 | WK2650 |
| Application | Weld-up custom header fabrication |
| Primary tube diameter | 2-inch |
| Collector outlet diameter | 3-1/2-inch |
| Included bends | Twelve JB-200-30-16-304 J-bends |
| Included collectors | Two 9908S collectors |
| Header flanges | Two flanges required; purchased separately |
| Included collector design | Two 9908S four-into-one slip-on collectors with scavenging spikes |
| Collector inlet / outlet | 2-inch inside-diameter inlet / 3-1/2-inch outside-diameter outlet |
| Material | 304 stainless steel |
Frequently asked questions
Are the collectors included?
Yes. Two 9908S collectors with 3-1/2-inch outlets are included with twelve 2-inch J-bends.
Can I choose flanges for my engine?
Yes. The two flanges are separate purchases so you can match the exact cylinder-head pattern needed for your fabrication project.
