do the 07 road kings have an adjustment for lowering the ride hieght of the back end

 

Theres no adjustment you would have to install lowered shoks or a lowering bracket kit. HD shock part # 54631-02B is what comes on the Street Glide and Road King Custom. Progressive 440IAS shocks are a good aftermarket shock that can be ordered in various lengths to lower it to your desired hight or White Bros offer thet bracket kits.