Bilstein

Bilstein has been building monotube dampers since 1954 — over 700 parts across the B4 replacement, B6 heavy-duty, B8 lowered and B8 5100 ride-height-adjustable ranges.

The series numbers are the buying guide. B4 restores factory ride for a vehicle that is stock. B6 is the heavy-duty answer for a truck that carries weight, tows, or wears larger tires. B8 is valved for a vehicle already on lowering springs. The 5100 series offers multiple snap-ring positions so one damper suits a range of front ride heights, which is what makes it a common leveling-kit companion.

Monotube construction is the reason these hold up on gravel: a larger piston and a separated gas charge shed heat better and resist the aeration that makes a twin-tube go vague on a long washboard road.

Most listings here carry verified vehicle fitment, so you can filter to your own year, make and model rather than guessing from a part number.

Where the range sits: Shocks & Struts (732), Coil Springs (13). It reaches 3 departments in all.

Not sure whether you want a level or a lift? Our lift kit basics guide walks through the difference, what each costs you in ride and geometry, and what winter changes.