Product Description

2011-2014 Mustang GT Shorty Headers By Kooks Custom Headers

When it comes to increasing horsepower with a performance exhaust set-up on the 5.0L 4V Coyote Motor, nothing compares to quality set of long tube headers ..... UNTIL NOW !!!

Kooks Custom Headers now offers their all new Super Street Series OEM Connection Headers for the 2011-2014 Mustang GT/Boss 302. These headers are designed with performance in mind. The OEM manifolds that "look like" a nice header design actually falls short on flow. Once the stock manifolds are removed it is easily noticed how the 2-3/4 connection chokes down to about 2-1/2 in the OEM collector and the 1-3/4 primary tubes are in a try-y configuration. The try-y configuration is not optimal for high flow due to the multiple bottle necks before the exhaust gases reach the collector. Kooks Super Street Series Headers maintain the 2-3/4 connection right into the collector for increase air flow and more horsepower. Combine this with the one piece, 1-7/8 primaries and you have one high performance street header.

All of the primary tubes sit evenly in the 2-3/4 collector for maximum flow. Finally, Kooks took the time to smooth out the welds on the header flange so there is little to no turbulence when the exhaust pulse leaves the engine. When the exhaust valves on your Coyote open, you can be sure that there is nothing holding your engine back with the all new Kooks Super Street Headers!

Initial testing of these headers showed an increase of 10 rear wheel horsepower and 8 foot pounds of torque at peak and an average of 14 rear wheel horsepower and 13 foot pounds of torque in the mid range. Not to bad for being hooked up the STOCK mid-pipes and catalytic converters! When combining the Kooks 5.0L Shorty 4V Headers with a high flow H-Pipe, JDM Engineering had recorded an additional increase of 8 rear wheel horsepower and 10 foot pounds of torque at peak and even more (10-15) in the mid-range power band!! Add these figures up and you'll see a net gain of nearly 20 wheel horsepower and 23 foot pounds at peak and 25 horsepower and 30 foot pounds in the mid-range!! Now you're in long tube headers power range!

The Kooks 2011-2014 Mustang GT/Boss 302 Super Street Headers allow you to easily use your high flow mid-pipe used for off road racing then swap back to a stock, catted mid-pipe for every day street use. With proper tuning your Mustang will not have issues when it comes to inspection time either.

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