These are a direct replacement for the factory catalytic converters fitted to the Vauxhall VXR8 LS2 and LS3. These remove the restriction of the catalytic converters resulting in more power and a nicer exhaust note. Price is for the pair and includes new bolts, washers and nuts. To get the best gains from these de-cats we recommend having the vehicle remapped which we can do in house at our Chester workshop, Please call for a quote.