Bilstein 24-115957 B8 Rear Shock for 08-13 BMW 128i/135i

Vehicle Fitment

• 2008-2013 BMW 128i (Rear Shock, Lowered/Performance Setup)
• 2008-2013 BMW 135i (Rear Shock, Lowered/Performance Setup)

Features

• Bilstein B8 Performance Plus monotube gas-pressure shock absorber
• Application-specific valving optimized for lowered springs
• Improves handling precision and body control
• Enhanced damping consistency vs standard OE shocks
• Designed for performance suspension setups
• Yellow corrosion-resistant finish
• Blue protective straight boot included
• Direct OE+ replacement fit - no modifications required

Specifications

• Brand: Bilstein
• Part Number: 24-115957
• Series: B8 Performance Plus
• Position: Rear (Driver or Passenger Side)
• Internal Design: Monotube gas-pressure
• Upper Mount Type: Stem
• Lower Mount Type: Stem
• Collapsed Length: 18.62 in / 473 mm
• Extended Length: 21.40 in / 543.5 mm
• Boot Included: Yes (Blue Straight)
• Spring Seat Included: No

Included Components

• 1x Bilstein B8 Performance Plus Rear Shock Absorber (24-115957)
• 1x Blue Protective Straight Boot

Product Description

The Bilstein 24-115957 B8 Performance Plus Rear Shock Absorber is engineered for performance-oriented BMW 1-Series models equipped with aftermarket lowering springs. Featuring a monotube gas-pressure design and application-specific valving, this damper enhances handling precision, reduces body roll, and improves damping responsiveness compared to standard OE units - especially in lowered or sport suspension setups.

Fitment is confirmed for 2008-2013 BMW 128i and 135i models with rear suspension applications designed for performance driving conditions. Sold individually, this rear shock installs easily with factory mounts and pairs perfectly with lowered springs or sport suspension components to deliver a sharper driving feel and increased control during cornering and dynamic maneuvers.