BMW 335i N54 Decat Downpipes E90 E91 E92 E93 2006-2010
Unlock more power, quicker spool and a harder, more aggressive exhaust note with our BMW 335i N54 decat downpipes. These BMW 135i 335i stainless steel decat downpipes are engineered for performance and reliability, delivering sharper throttle response and reduced backpressure on the turbocharged N54 engine. Perfect for anyone searching for BMW 335i downpipes, N54 downpipes, BMW E90 E92 E93 catless downpipes, BMW 135i decat, or a BMW N54 downpipe upgrade made in the UK.
Fabricated in the UK from premium T304 stainless steel and TIG welded in house, these catless downpipes are built for long-term durability and maximum flow. We have installed and tested these on our own cars and with customers, and the feedback has been excellent. Expect noticeable gains, a crisper throttle, and that proper N54 soundtrack you want from a decat downpipe upgrade.
Key Features
- T304 high-grade stainless steel construction for strength and corrosion resistance
- Precision TIG welded in house for consistent quality and durability
- UK fabricated with laser-cut 10 to 12 mm flanges for a precise, leak-free fit
- One-piece stainless design formed on a 12-axis CNC tube bender for optimal gas flow and maximum internal diameter
- Faster turbo spool for sharper throttle response and improved drivability
- Reduced exhaust backpressure and lower temperatures to help the turbocharger work more efficiently
- Substantial weight saving compared with the factory catalytic converters
- Noticeably more aggressive exhaust note without the woolly factory restriction
- Lifetime warranty for long-term peace of mind
Proven Performance
We have tested this product and found increases of 12 to 17 bhp, alongside improved turbo response. Ideal for anyone searching for BMW 335i decat, N54 decat downpipes, BMW E90 E92 E93 downpipes, BMW 135i downpipes, or catless downpipes for the N54 platform.
Vehicle Fitment
- BMW 1 Series E82 E88 – 135i N54 engine 2006–2010
- BMW 3 Series E90 E91 E92 E93 – 335i N54 engine 2006–2010
Common search terms: BMW 335i N54 decat downpipes, BMW E90 E91 E92 E93 downpipe upgrade, BMW 135i N54 catless downpipes, stainless steel T304 downpipes, UK made N54 downpipes, TIG welded BMW downpipe, 335i decat exhaust upgrade.
Installation and Support
Professional installation is recommended as some exhaust systems sit slightly differently and can be tight. We also recommend purchasing Lambda sensor spacer(s) to help prevent the engine light from coming on in most cases. You can find these in our other items.
Prefer us to fit it for you? Book fitting with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Why Buy From Nforcd
We use these N54 decat downpipes ourselves and our customers love the results. UK fabrication, quality materials, precise TIG welding, great fitment and a lifetime warranty make this one of the best value BMW 335i and 135i downpipe upgrades on the market.