BMW Z4 E85 E86 Front Left Strut - Bilstein B4 22-164568

Bilstein B4 22-164568 front left strut for Z4 E85 (2002-2008) and E86 (2006-2009). Not a coilover. Not a rebox. Not a 'genuine replacement' - it’s a proper twin-tube gas-pressure damper, built to Bilstein’s spec for fast road and track-day use.

• Fitment exact: E85 Roadster & E86 Coupe only - no F-series, no G-series, no M40i confusion
• Stage 1 & fast road ready: Stiffer valving than worn OE units, but retains ride compliance for daily driver duty
• Decat or track day?: Pair with Eibach Pro-Kit or H&R OE Sport springs - no drop needed, just control
• Search terms covered: Z4 E85 front left shock, E86 strut replacement, Bilstein B4 Z4, fast road Z4 suspension, track day Z4 damper, daily driver Z4 upgrade
• Right-side match: Bilstein 22-164575 (sold separately)

No fitting advice. No quotes. No 'OEM plus' spin. Just the part - engineered, tested, and in stock.