Bilstein 46-181268 B12 Pro-Kit Lowering Kit for BMW Z4 E89 sDrive23i/28i/30i

Vehicle Fitment

• 2009+ BMW Z4 (E89) sDrive23i, Front and Rear
• 2009+ BMW Z4 (E89) sDrive28i, Front and Rear
• 2009+ BMW Z4 (E89) sDrive30i, Front and Rear

Fitment Notes

• Lowers vehicle approximately 1"-1.5" (24-40mm, depending on application)
• Matched shock and spring pairing - not intended for use with other aftermarket springs
• Confirm exact trim and production date (05/09 onward) before ordering

Features

• Matched Bilstein damper and Eibach Pro-Kit spring pairing
• Approximately 1"-1.5" lowered ride height for an aggressive stance
• Reduces body roll for sharper, more controlled cornering
• Reduces squat and dive under acceleration and braking
• Monotube gas-pressure damper design for consistent performance
• Fixed-rate, application-specific valving matched to spring rate
• Maintains near-stock ride comfort despite the lowered stance
• Backed by Bilstein's 2-year warranty and Eibach's 5-year spring warranty

Specifications

• Position: Front and rear
• Internal design: Monotube, gas-charged
• Shock body finish: Yellow
• Spring finish: Gray/silver
• Adjustable damping: No
• Hardware included: Yes

Included Components

• 2x Bilstein Front Dampers
• 2x Bilstein Rear Dampers
• 2x Eibach Pro-Kit Front Lowering Springs
• 2x Eibach Pro-Kit Rear Lowering Springs

Product Description

The Bilstein 46-181268 B12 Pro-Kit is a complete front-and-rear lowering suspension package for the BMW Z4 (E89), pairing Bilstein's monotube dampers with Eibach's Pro-Kit lowering springs. Rather than combining mismatched aftermarket parts, Bilstein tunes the shock valving specifically to match the Eibach spring rate and reduced ride height, delivering tighter body control and reduced squat and dive.

The result is a car that sits about 1"-1.5" lower with noticeably less body roll and sharper handling, while staying close to factory ride comfort. It's a fit-and-forget kit - install once and both components work together as designed. Backed by Bilstein's 2-year warranty and Eibach's 5-year spring warranty.