I ride my Bike in the streets some times with a Single Stage. My understanding is the difference between single and 2 stage is that on the 6 arms the Single all has the same weights and the Dual Stage 3 arms light weights (Like the Bolts and Nuts and maybe 1 washer) and other 3 arms have the Bolts and Nuts but 2 or 3 washers for more weight!. I use Normal springs and just the Bolt & Nut with 1 washer. Remember it is a Speed thing and when sitting still, No wieght is applied but as speed increases the weight gets a lot greater!