The All New Rubicon Express Neutral Force Steering Stabilizer Is The Ideal Addition To Help Reduce Steering Vibration, Wear And Tear Of Your Steering Components And Provides Ultimate Control In Your Steering Of Your JK Wrangler. The Internal Spring Neutralizes The Gas Pressure Preventing A Push In The Direction Opposite The Shaft. Traditional Stabilizers Create A Non-Linear Steering Response Or A Push To One Side As The Shock Wants To Extend On Itself. By Contrast, Rubicon Express Offers Adjustability And A Negative Spring Inside The Stabilizer Which Offsets The Force Generated By Increased Gas Pressure Caused By The Shaft Displacing Fluid Inside The Stabilizer.