The guys in NY add about 100lbs with 50lbs per bar. Now because as of yet i dont have the VHT in hand, i made the weight bars with a capacity of 220lbs to see what weight gives me the best traction. All the bars are removable so that i can adjust the weight according to my preference.
Also due to not enough space/wide body front end,i could not install the weight bars on the lower end. Therefor i ended up taking off the stock oem crash bar and installing the weight bars there. In the end they both serve its purpose (to add weight at the front end of the car for more traction).