N55 Race Downpipe 535i, 640i 740i, X5, X6 (3.5" 2011-2014/4" 2015-2018)

This N55 catless downpipe delivers serious performance across a wide range of BMW turbocharged models. Handcrafted from 304-grade stainless steel with TIG welding and CNC-machined flanges, it's engineered for direct bolt-on installation with zero modifications required. The smooth radius bends reduce exhaust turbulence and maximize flow efficiency, translating to 25–30 hp gains when tuned. This downpipe fits 535i, 640i, 740i, X5, and X6 models from 2011–2018. Verify your specific wastegate type (pneumatic or electronic) before ordering to ensure proper fitment. A tune is required to prevent check engine light.