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For the McLaren 675LT, 2015–2017, we carry Fabspeed on this page.
No package has been put together for it yet, so the Fabspeed range is below to work through, and the parts are close to ready to order.
There is always someone on the team to put together something specific, and no question is too small, so , or scroll on down to get started.
Sport Catalytic Converters
Sport catalytic converters for the McLaren 675LT, replacing the four restrictive factory catalytic converters with two HJS 200-cell high-flow cats for more power and a fuller exhaust note while staying street legal. Fabspeed pairs the cats with a cast outlet section for smoother flow and wraps the assembly in thermal blankets rated to 1800°F to protect surrounding components from the added heat. Built from T304L stainless steel with no catalyst-triggered check engine light guaranteed.
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Frequently asked
Does the Sport Catalytic Converters fit my 675LT?
This listing is specific to the McLaren 675LT. 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 guarantees no catalyst-generated check engine light with these HJS sport cats fitted.
What's different from a cat-bypass pipe?
These keep genuine high-flow catalytic converters in place so the car stays street legal, unlike a cat-bypass pipe which removes emissions equipment entirely.
What protects the engine bay from the extra heat?
Thermal blankets rated to 1800°F, wrapped around the cats.
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.