Gravity Performance downpipes instantly increase power by allowing exhaust gasses to exit the vehicle quicker. Our downpipes are designed to be direct replacements for the OEM catalytic converter, ensuring smooth installation every time. ---Manufactured from high quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get the most from the N54 engine ---Designed with flexi joints to reduce strain on the exhaust system ---Sold for off-road and track use only Compatible with: BMW 1 Series | 135i | E82 E87 E88 | 3.0L N54 Engine | 2006-2010 models BMW 3 Series | 335i | E90 E91 E92 E93 | 3.0L N54 Engine | 2006-2011 models.
