The Ultimate Flange

Behind the beauty of the Ultimate Headers unique design is the technology that takes aftermarket headers to a new level of achievement.

The first step in developing the Ultimate Header was to utilize the latest engineering techniques, including the Finite Element Analysis (FEA) processes to optimize the design and materials to be used to literally create the “ultimate” flange and its signature “high-tech” appearance.

Using FEA, Ultimate Headers is able to reduce weight, while providing the required clamping forces to eliminate leakage. The use of FEA processes helped to identify the structural dynamics which impact the header system.

These are the very same processes used by motorsports engineers to evaluate the stresses in severe-duty environments such as NASCAR, Formula One, IndyCar, drag racing and endurance races like the 24 Hours of LeMans.

The very distinctive Ultimate Headers flange design provides several advantages:

  • Reduced weight
  • Improved flange cooling and ribbed reinforcement adds greater strength while reducing heat induced warpage

These benefits, combined with the advanced Cometic MLS (Multi Layer Stainless) header gaskets included with each set of headers give Ultimate Headers the leading edge when it comes to adding a total performance enhancing exhaust system.

Ultimate flange

The Ultimate Flange provides an increased flat surface area for a tighter seal

The Ultimate Flange

1/4″ flange vs the Ultimate Header Flange

5/16" flange vs the Ultimate Header Flange

5/16″ flange vs the Ultimate Header Flange