Stainless Steel Sport Exhaust Headers for BMW 325/330/Z3/Z4 with M54 6-cylinder engine, and manual and automatic transmissions. These high performance headers were developed in Germany and are manufactured out of heavy gauge T304 stainless steel for long life. They are intended for track and off road use only unless you weld in catalytic converters. Kit comes complete with gaskets. Left Hand Drive models only. Not for xi four wheel drive models.
Features:
Design utilizes a F1-style merge collector for reduced turbulence and creates more horsepower and torque
All T304 stainless steel heavy tubing, TIG welded and polished finish
Includes 4 O2 (lambda) sensor ports just like the original down pipe configuration, does not include catalytic converters - not useable on the public roads! Check your local regulations
Improvement is approximately 12 hp. With our ECU tuning software upgrades we have seen increases of over 30 HP
Design utilizes equal length headers, smooth mandrel bends and large F1-style collectors
Headers really make the car noticeably faster across the rpm range with minimal additional noise
