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We're open and shipping!

Coupon Code Boost5 at checkout

Due to an increase in sales volume and demand, please allow some extra time for items to ship and please inquire about inventory if it is not directly listed on the product.

Financing available for as low as 0%.

Perrin E4-Series Equal Length Big-Tube Headers - 02-14 WRX / 04+ STI

NOTE: 2.0L WRX engines will need the 2.5L STI oil pan install kit.

The PERRIN Big Tube Header is perfect for those of you looking to increase both horsepower and torque numbers. However because this header features 1.625” tubing, this makes for the perfect header for those employing a rotated setup looking to make more than 500 horsepower. 

The E4 Series Big Tube Header comes with collectors that have been designed to f. . . Show More >




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