4x4AT's stocks premium products to enhance the engine performance of a Isuzu D-Max, such as premium quality long-life air filters and performance chips. Our TUV certified German-made plug and play engine chips increase the power, torque and fuel efficiency of the vehicle and are easy to fit and remove. We offer a professional fitting service for all the Isuzu D-Max accessories we sell, available at one of our UK installation centres, contact us for details.