Bilstein 46-189509 B12 Pro-Kit Lowering Suspension for 97-02 BMW Z3 Roadster RWD

Vehicle Fitment

• 1997-2002 BMW Z3 1.9 (M44) -- Roadster
• 1999-2000 BMW Z3 2.3 -- Roadster
• 1996-1998 BMW Z3 2.5 -- Roadster
• 2001-2002 BMW Z3 2.5i -- Roadster
• 1997-2000 BMW Z3 2.8 -- Roadster
• 2001-2002 BMW Z3 3.0i -- Roadster

Fitment Notes

• RWD models only
• Roadster (E36/7) only -- does NOT fit Z3 Coupe (E36/8)
• Does NOT fit Z3 M Roadster or M Coupe
• Factory shock mounting bolts are reused -- all other hardware included
• Complete kit -- no additional components required

Features

• Bilstein B8 Performance monotube dampers -- front and rear
• Eibach Pro-Kit progressive lowering springs -- front and rear
• Dampers and springs dyno-tested and road-tuned together as a matched set
• Upside-down monotube design -- improved damping and lateral support
• Lowers vehicle 30mm front / 30mm rear (~1.2")
• Progressive spring rate -- comfort at low load, firm under hard driving
• Reduces body roll and improves cornering response
• All necessary hardware included
• Limited lifetime warranty

Specifications

• Series: B12 Pro-Kit
• Dampers: Bilstein B8 Performance monotube
• Springs: Eibach Pro-Kit progressive
• Position: Front and Rear
• Lowering: 30mm front / 30mm rear
• Damper Design: Upside-down monotube
• Damper Finish: Yellow
• Spring Finish: Dark grey
• Drivetrain: RWD only
• Weight: 53.1 lbs

Included Components

• 2x Bilstein B8 front struts
• 2x Bilstein B8 rear shocks
• 2x Eibach Pro-Kit front springs
• 2x Eibach Pro-Kit rear springs
• All installation hardware

Product Description

The Bilstein 46-189509 is a B12 Pro-Kit complete suspension kit for the 1997-2002 BMW Z3 Roadster. It pairs Bilstein's B8 Performance monotube shocks and struts with Eibach's Pro-Kit progressive lowering springs -- each component road-tested and dyno-tuned together as a matched set for this specific application. The result is 30mm of front and rear drop with a significant improvement in handling dynamics over stock.

The B8 upside-down monotube dampers provide better lateral support and more consistent damping than conventional designs, while the Eibach Pro-Kit progressive springs use a rate that stays comfortable at normal loads and firms up progressively under hard cornering. Unlike mismatched spring/shock combinations, the B12 kit is engineered as a complete system -- no guesswork. Fits RWD Z3 Roadster only; does not fit Z3 Coupe or M variants. All hardware included. Backed by Bilstein's limited lifetime warranty.