What length of Revo/Revo-A do you need?

We generally recommend the 13" shocks due to the travel you gain resulting in a better ride. The 12" shocks will sit at 11.5" with the rider/passenger on the bike with the sag set correctly. The 13" shocks will sit at 12" with the rider/passenger on the bike with the sag set correctly. There will only be a 1/2" difference in height between the two lengths when you have the sag set correctly.