With the universal MR33 steel battery weight you can get the balance in your car close to perfection while lowering the center of gravity at the same moment. The weight is only 0.6mm thick and has a total weight of 28g. It will fit perfectly under every standard size 2S lipo pack and is a great setup option if you use very light packs between 220 and 260g in your car.
MR33 offers a steel battery weight for shorty packs as well (MR-STW-20G). which will add 20g of weight under the shorty battery.