It can be confusing, do I need B4 or B6? What about B8? What’s the difference? What’s best?
To answer this question you need to know what you’re trying to achieve by changing the suspension, here are some pointers to help you choose the right Bilstein suspension for your car and more importantly for you, the driver.
So to help you decide you need to know the differences between the ranges.
Bilstein B2 and B4 are replacement dampers. In other words, if you need to replace your shocks because your cars failed its MOT or the shocks are leaking then choose Bilstein B2 or B4, these are intended to replace your original car suspension.
Bilstein B6 and B8 are uprated shock absorbers. If you are looking to improve the vehicle handling you should consider Bilstein B6 or Bilstein B8. If you want to retain the vehicle ride height or you do a lot of towing and want a firmer suspension the B6 is for you.
If you have a lowering springs fitted to your car you need B8. The B8 damper is a shortened damper and only suitable for use with lowering springs.
If you are changing your shock absorbers always change a pair across the same axle. In other words, do not just change just one shock absorber, change them both! This is important, shocks do wear out. You really wouldn't want a worn shock on one side and a new on the other, your vehicle handling will seriously be compromised especially in an emergency situation.