Bilstein 33-230399 Universal B8 5125 Zinc Plated Monotube Shock Absorber

Vehicle Fitment

• Universal - Custom suspension applications and lifted vehicles

Features

• B8 5125 Series high-gas pressure monotube shock absorber
• Zinc-plated smooth body for enhanced corrosion resistance
• Nitrogen gas-charged monotube design for consistent damping
• Self-adjusting deflective disc valving for responsive control
• Eye-to-eye mount configuration with 5/8" bushings
• Approximately 12.0" of travel for flexible installations
• Black protective bellows boot included
• Non-adjustable damping tuned for broad performance use

Specifications

• Part Number: 33-230399
• Series: Bilstein B8 5125
• Type: Monotube, nitrogen gas-charged shock absorber
• Finish: Zinc-plated smooth body
• Collapsed Length: ~18.00"
• Extended Length: ~30.00"
• Travel/Stroke: ~12.0"
• Upper Mount: Eye 5/8"
• Lower Mount: Eye 5/8"
• Body Diameter: ~46 mm
• Damping: Non-adjustable
• Boot: Black protective bellows included

Included Components

• 1x Universal B8 5125 Shock Absorber (33-230399)
• 1x Black protective bellows boot

Product Description

The Bilstein 33-230399 is a **universal B8 5125 Series monotube shock absorber** designed for custom suspension applications where a vehicle-specific part may not exist. Built with a high-gas pressure monotube design and self-adjusting deflective disc valving, this shock delivers consistent, responsive damping across a range of operating conditions. The zinc-plated smooth body enhances corrosion resistance, making it suited for lifted trucks, custom builds, and aftermarket suspension systems that require strong, reliable shock performance.

Featuring an eye-to-eye mount configuration with standard 5/8" bushings and approximately 12" of travel, this shock offers flexibility for a variety of custom suspension geometries. The included black protective bellows boot helps protect the shaft from dirt and debris. Because this shock is universal, proper fitment requires matching its length and mounting type to the vehicle's suspension setup or using appropriate adapters and hardware. It's a solid choice for suspension builders and enthusiasts looking to upgrade damping performance in lifted or modified applications.