The Japspeed Stainless Steel Decat Downpipe is designed to improve exhaust flow and engine performance on Mazda RX-8 1.3 Rotary models from 2003 to 2012.
Replacing the restrictive factory downpipe and catalytic converter with a larger bore, free-flowing stainless steel pipe allows exhaust gases to pass through the system more efficiently, helping reduce back pressure and improve engine response.
Manufactured from high-quality T304 stainless steel, this one-piece decat downpipe features a 2.75-inch bore, designed to improve exhaust gas flow and support increased power output from the rotary engine.
Removing the restriction of the factory catalytic converter allows the high-revving rotary engine to breathe more freely, helping improve exhaust efficiency and performance, particularly at higher engine speeds.
Featuring TIG-welded construction and CNC-machined flanges, the downpipe offers strength, durability and corrosion resistance, making it suitable for performance-focused and track applications.
The system is supplied with gaskets and bolts for installation.
Features
Manufactured from high-quality T304 stainless steel
2.75-inch exhaust bore
One-piece decat downpipe construction
Replaces the restrictive factory downpipe and catalytic converter
Free-flowing design to improve exhaust gas flow
Designed to reduce exhaust back pressure
Helps improve engine response and performance
Designed to support increased power output from the rotary engine
TIG-welded construction
CNC-machined flanges
Durable, corrosion-resistant stainless steel construction
Gaskets and bolts included
Suitable for off-road and track applications
Vehicle Fitment
Mazda RX-8 1.3 Rotary (2003–2012)
Please Note
Sold for off-road and track use only.
This decat downpipe removes the factory catalytic converter and will not pass an MOT emissions test while fitted. It is not suitable for use on public roads.
