The Enhance Performance Astra J VXR 3.5″ Ultimate De-cat Downpipe is removes the main cat and secondary cat to improve performance, increase turbo response and significantly reduce back pressure.
It is a completely unique and original design, there is no other Astra J VXR De-cat Downpipe on the market that is entirely 3.5″ all the way to the cat back section.
The Astra J VXR 3.5″ Ultimate De-cat Downpipe is made entirely from high quality stainless steel, TIG welded and back purged for a smooth internal finish. This helps the exhaust gas flow out as quickly as possible reducing exhaust gas temperatures (EGTs), resulting in maximum power gains.
We have designed this huge 3.5″ bore downpipe with a split v-band for easy fitting. It is also a direct fit for the standard cat back exhaust, as well as any other after market exhaust.
We recommend professional installation for this part; all fixing bolts are included. Remapping is not required but is recommended for optimum results.