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Sport Cat Downpipe
Fabspeed's Sport Cat Downpipe swaps the restrictive factory catalytic converters on the F30/F32 335i and 435i for a genuine 200-cell HJS A catalytic converter coating using three precious metals for durability and flow, rather than the cheaper single or dual-metal coatings used in lower grade cats. catalytic converter core, the same one Fabspeed uses on its Ferrari 458 Italia applications. It adds power, throttle response and a sportier sound without triggering a check engine light, and complies with most emissions regulations. Built to a direct bolt-on fit, it saves 2 lbs versus the factory downpipes. There are two flange styles depending on your turbo's wastegate type, so check your car's build date (on the driver's door jamb sticker) before ordering.
Frequently asked
Which cars does the Sport Cat Downpipe fit?
Fits your BMW 335i/435i (N55) (2011-2015). Fabspeed lists this piece for: BMW F30/F32 335i & 435i; BMW F30/F32 335i & 435i vehicle years; BMW 335i & 435i (F30/F32). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.
What does the price include?
The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.
How long until it arrives?
Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.
Will this trigger a check engine light?
No, Fabspeed says it's optimized for no catalyst-generated check engine light and complies with most emissions regulations.
What catalytic converter does it use?
A genuine 200-cell HJS catalytic converter core, the same one Fabspeed fits to its Ferrari 458 Italia applications.
How do I know which flange I need?
It depends on your wastegate type: pre-08/2013 cars use a mechanical wastegate and a smaller flange, while cars from 08/2013 onward use an electronic wastegate and a larger flange. Your build date is on the driver's door jamb sticker.
Which option should I choose?
The flange depends on your car's wastegate type: cars built before 08/2013 use a mechanical wastegate and the smaller flange, while cars from 08/2013 onward use an electronic wastegate and the larger flange. Check your build date on the driver's door jamb sticker if you're unsure.
Who installs it?
Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.
Is it covered by warranty?
Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.
Can I just buy this outright, or do I need to talk to someone first?
Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.
