BMW 135i N54 Decat Downpipes E82 E88 2006-2010 - Stainless Steel Catless Downpipes
Transform the way your N54-powered BMW drives and sounds with our UK-fabricated BMW 135i N54 decat downpipes. Built from premium T304 stainless steel and hand TIG welded in-house, these performance downpipes unlock faster turbo spool, sharper throttle response, stronger mid-range, and a deeper, more aggressive exhaust note. We run these downpipes on our own builds and our customers consistently rate the fit, finish, and gains.
Why choose these BMW N54 decat downpipes
- T304 high-grade stainless steel for durability and corrosion resistance
- Hand TIG welded in-house for strength and precision
- Laser-cut 10-12 mm flanges for a precise, leak-free seal
- One-piece 12-axis CNC mandrel-bent tubing for optimal gas flow and maximum internal diameter
- Reduced backpressure and exhaust temperatures for improved efficiency
- Noticeable power gains with faster turbo spool and a sharper throttle
- Deeper, more aggressive exhaust tone that enhances the N54 character
- Significant weight saving compared to factory catalytic converters
- Fabricated in the UK for consistent quality and reliability
Proven performance
Tested by us with gains of 12-17 bhp, improved response, and enhanced drivability across the rev range.
Fitment - BMW N54 twin-turbo models
- BMW 1 Series E82 E88 - 135i N54 engine 2006-2010
- BMW 3 Series E90 E91 E92 E93 - 335i N54 engine 2006-2010
Recommended installation and support
Professional fitting is recommended as exhaust tolerances can be tight. For installation, book with Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com.
We also recommend adding lambda sensor spacer(s) to help prevent the engine light in most cases. Search our other items to add these to your order.
Warranty
This product comes with a lifetime warranty.
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