You can (slightly upto 1" max) will ensure that your dampers/shocks don't get ruined and quality of ride remains same. You will get better handling and lesser body roll. BUT don't slam it near 2". as for how? Please let us know which model it is, your driving habits/style, load you carry in daily driving, drive it mostly in cities with acceptable roads or both rural/urban. Too many questions, sorry, but you will get better answers.