Got a highly modified K-Series motor? Try our 4-1 header design.  Manufactured using only the highest quality 4-1 merge collector, this header is sure give you more peak horsepower.  Combine this header with high compression pistons and some monster cams and you will be well on your way to making some power!

Our 4-1 design is available for hyrbrid swaps using many of today's most popular mount kits (Hasport and Hybrid). We will keep you updated as new designs are added to our product list.

Mild Steel $900

Stainless $1025