E82/E88 (2004-2012)

The Berk Technology rear muffler delete is a no compromise approach to maximum horsepower gains in a lightweight elegant package. The muffler delete features a completely straight through design with zero obstructions to flow. The twin 80mm dual wall tips finish off the look with a classy appearance that doesn't take away from the original look of the car. This is the identical system we use on our own championship winning race cars. Learn More

Berk Technology is a manufacturer of high quality aftermarket automotive parts for specialized vehicles. Their facility houses a state of the art research and development center where extensive testing goes into each and every one of their products. In addition, all of their products go through rigorous testing on and off the track to ensure the utmost in quality prior to going to market. Their extensive racing experience in events such as Redline Time Attack, Super Street / Euro Tuner Time Attack, NASA, and SCCA, allows them to maintain the link between motorsports and street driven applications. Learn More

Engineered and manufactured (Hand-crafted) in Stuttgart, Germany, Eisenmann is known for delivering maximum performance and deep, super sporty sound, using 100% ultra light weight stainless steel construction. Eisenmann is the top European manufacturer of high performance exhaust systems for a wide variety of platforms. Their innovative design approach has produced products of only the highest quality, including creation of the original DTM style exhaust tips. Since 1988, Eisenmann has been manufacturing top quality exhausts with full German TUV approval. Eisenmann systems feature an aggressive tone, and target the lBMW owner who is proud of his car and wants to be noticed. The systems are made from 100% 304 stainless steel and are manufactured to OEM or better specification using Eisenmann's wide range of experience as an OEM exhaust manufacturer. Learn More

Berk Technology is a manufacturer of high quality aftermarket automotive parts for specialized vehicles. Their facility houses a state of the art research and development center where extensive testing goes into each and every one of their products. In addition, all of their products go through rigorous testing on and off the track to ensure the utmost in quality prior to going to market. Their extensive racing experience in events such as Redline Time Attack, Super Street / Euro Tuner Time Attack, NASA, and SCCA, allows them to maintain the link between motorsports and street driven applications. Learn More

Berk Technology is a manufacturer of high quality aftermarket automotive parts for specialized vehicles. Their facility houses a state of the art research and development center where extensive testing goes into each and every one of their products. In addition, all of their products go through rigorous testing on and off the track to ensure the utmost in quality prior to going to market. Their extensive racing experience in events such as Redline Time Attack, Super Street / Euro Tuner Time Attack, NASA, and SCCA, allows them to maintain the link between motorsports and street driven applications. The Berk Technology exhaust system is perfect for those wanting to free the sound and performance out of their 135i. This full system includes a mid pipe featuring dual 3" tubing and dual resonators, a 2.5" Y-pipe and a dual 80mm tip muffler. Lightweight construction saves about 25lbs over the stock system. The sound is deep and throaty and even slightly exotic when at full throttle. Choose between polished stainless steel muffler or black ThermalCoat muffler. Learn More