BMW 135i 2012 to June 2013 PWG Downpipe with 200 Cell Hi-Flow Sports Cat – the essential N55 performance upgrade for sharper throttle response, faster turbo spool and a deeper, more aggressive exhaust note. This high-flow catted downpipe is engineered for the BMW N55 PWG (pneumatic wastegate) engines built up to June 2013, delivering reliable gains and everyday drivability.
If you are searching for BMW M135i downpipe, BMW 135i downpipe, N55 PWG downpipe, BMW 335i downpipe, 200 cell sports cat, high flow catted downpipe, F20 F21 F30 F31 downpipe, pre-EWG downpipe or BMW M135i sports cat, this is the exact part you need.
- Fitment: BMW M135i N55 PWG pre-July 2013 (F20 F21) and BMW 335i N55 PWG pre-July 2013 (F30 F31). For cars built July 2013 onwards with EWG, please see our other listing.
- Construction: Precision machined from T304 high-grade stainless steel, expertly TIG welded and mandrel bent for maximum internal diameter and smooth gas flow.
- Cat spec: 200 cell hi-flow sports catalytic converter for reduced backpressure and strong mid-range torque.
- Performance: Quicker turbo spool, crisper throttle response and a richer, sportier exhaust tone. We have tested this product and seen increases of 10 to 15 bhp.
- Driveability: Lower exhaust gas temperatures and reduced backpressure help the turbocharger breathe, improving cylinder charge and real-world performance.
- Quality and reliability: Built to last with premium materials and finish.
- Warranty: Comes with a lifetime warranty.
Why choose this BMW M135i N55 PWG 200 cell sports cat downpipe?
- Optimised for the N55 PWG engine up to June 2013 for perfect fit and performance.
- High-flow 200 cell cat balances performance with refinement, offering a noticeable power gain without sacrificing drivability.
- Mandrel bends and large bore maximise flow while retaining strong mid-range torque.
- Proven on our own cars and countless customer builds. Feedback points to an easy fit and fantastic sound.
Compatibility and notes
- This fits N55 PWG models built before July 2013 only. It will not fit EWG cars from July 2013 onwards. If your car is a 63 plate or newer, please see our other listing for the correct version.
- Professional installation is recommended, as factory exhaust tolerances can vary slightly.
- We recommend fitting a lambda sensor spacer to help prevent a check engine light in most cases.
- Road legal and Euro 5 rated. This should pass an MOT emissions test when fitted.
Fitting service
Want it fitted? Nforcd offers professional installation in Warwickshire. Request a fitting quote at Sales@nforcd.com.
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