BMW X3 E83 Bilstein B12 Pro-Kit (46-189547) - Fast Road

The Bilstein B12 Pro-Kit (46-189547) is a matched monotube damper and Eibach spring set for the BMW X3 E83. It’s a fast road setup - not a track-day compromise, not a daily-driver softie.

Lowers ride height by 25-40mm front and rear. Improves turn-in, reduces body roll, and retains usable compliance over UK roads.

• Direct-fit; uses OE mounting points, no modification required
• No coilover complexity - just bolt-on precision damping and progressive spring rates
• Bilstein monotubes + Eibach springs, pre-matched and tested as a system