The Ares Cable Attachment comes with two 260lbs weight stacks for a total of 520lbs. We knew that for some people, this would not be enough weight, so we've given you the option to max out the potential of your Ares by upgrading the stacks. 

The Ares Weight Stack Upgrade will add 50lbs to each weight stack making the new total weight 310lbs or 620lbs in total. Don't forget, there are 4 incremental 2.5lbs weights included for micro-adjustments.