This new 2.0mm stiff weave chassis will make the Mi5 stiffer than the standard kit set up, which improves stability in high grip conditions. It will also lowers the centre of gravity of the car, and reduces the weight by 10 grams. This is a high performance product and is not as strong as the standard kit chassis. From CORE RC this 22 piece titanium ball set will significantly reduce the weight of your Mi5. The balls are super tough and can be used in many vehicles again and again without wear.