Athletic Xtreme have announced a new supplement that will available for testing in 2013. The product is titled Mass FX and has been designed to boost your testosterone using four main ingredients with no proprietary blends. None of the contents have been released so everything will be coming as a surprise in the new year. If the name of the supplement does sound familiar that is because AX do already have a product called Mass FX in their line. However based on the packaging and the fact that the current one version uses a proprietary blend. This supplement will be a whole new bottle of test boosting goodness.