Home / Performance Upgrades / Engine Upgrades Engine Upgrades Most popularNew inPrice (low to high)Price (high to low)Name (A to Z)Name (Z to A) Sort By Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A Showing 6 of 6 Items In Stock Audi S1 Cat Back Exhaust (Non-Resonated) From: £1,200.04 More details Quickview Sold out Focus MK3 ST/RS 63mm Throttle Body upgrade kit £270.48 Out of stock In Stock Ford Focus RS Performance Exhaust De-Cat Pipe £169.68 Add to cart Quickview In Stock MK3 Focus ST/RS petrol throttle body spacer kit £60.55 Add to cart Quickview In Stock VW Golf MK5 GTI 2004-09 Cat Back Exhaust (Resonated) £764.00 More details Quickview In Stock VW Golf MK5 GTI 2004-09 Turbo Back Exhaust (with De-Cat / Non-Resonated) £1,136.64 More details Quickview