BMW Z4 M E85 E86 S54 Coilovers - Bilstein B16 PSS10 (48-141635) for Track Day or Fast Road

For the E85 and E86 Z4 M with the S54 engine - not the N52, not the 3.0i, not a post-facelift facsimile - these are the real-deal Bilstein B16 PSS10 coilovers. Part number 48-141635. No rebranding. No reinterpretation. Just 10-way rebound and bump adjustability, monotube dampers, and threaded bodies built for fast-road composure or track-day repeatability.

• E85 Z4 M Roadster and E86 Z4 M Coupe only - confirmed fitment, no adaptors needed
• Stiff enough for stage 2 S54 builds, compliant enough for daily driver use with sensible springs
• Works with decats, cat-backs, and intake upgrades - damping control matters more when power’s up
• Not a show-car ‘stance’ kit: designed for track day, fast road, and OEM plus handling intent
• Adjusts ride height without spacers - drop up to 50 mm while retaining full suspension travel

If you’re searching for Z4 M E85 coilovers, Z4 M E86 S54 suspension, Bilstein PSS10 E85, or track-ready Z4 M coilovers, this is the part number you want.