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Berk 135i / 1M Resonated Midpipes (BT1801-MP)

The Berk Technology exhaust system is perfect for those wanting to release the performance and sound from their high performance machine. Back-to-back championships race wins, and multiple track records are testament to the quality and performance of Berk Technology exhaust products. These midpipes feature larger diameter 2.5 inch mandrel bent piping for increased horsepower, torque, and exhaust flow. Engine exhaust gas temperatures (EGT's) are reduced and turbo lag is reduced resulting in greater engine efficiency.

Uses larger diameter piping to increase flow, reduces backpressure and faster acceleration. Reduced turbo spool time and lower exhaust gas temperatures (EGR's) for a more efficient running engine. Straight through resonators with zero restrictions gives the your BMW a more aggressive exhaust note, while still maintaining a smooth tone. Reduced exhaust "drone" at highway speeds while improving performance and reducing weight at the same time. Removes the small restrictive OEM resonator box mounted at the rear of the OEM pipe for a more free flow path. Removes secondary catalytic converters on N54 powered 135i's (2008-2010, & 1M). This part does not cause check engine lights!
Pricing: $699.99
Free FedEx / UPS Ground Shipping!


Fits both 135i and 1M


-Dual 2.5 inch mandrel bent tubing merging into a single 3 inch Y-pipe
-Twin straight through drone cancelling resonators
-Increases horsepower, torque, and turbo response
-Reduced exhaust back pressure and increased flow
-Hand assembled and TIG welded with full stainless steel construction


Shipping Information

  • Item Requires Shipping
  • 28.0 lbs.
  • W42.0000” x H20.0000” x L7.0000”
  • Free FedEx / UPS Ground Shipping!
  • This item ships in its own box.

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