Bilstein 25-288155 Suspension Shock Absorber - Rear Left

Bilstein B8 8100 (Bypass) Shock Absorber Overview

The Bilstein B8 8100 (Bypass) shock absorber, part number 25-288155, is engineered for Toyota FJ Cruiser owners seeking precise suspension control. Designed with a monotube internal structure and bypass body, this shock absorber offers adjustable damping for tailored ride performance.

• Double adjustable compression and rebound with click adjuster knob
• Bypass body design (non-coilover)
• Monotube internal design for consistent damping
• Reservoir included for improved heat dissipation
• Collapsed length: 14.72 inches (374 mm)
• Extended length: 24.09 inches (612 mm)
• 60mm piston diameter and 18mm shaft diameter
• Lower mount type: Eye 19.25mm; Upper mount type: Stem
• Evo grey finish for corrosion resistance

About the B8 8100 (Bypass) Product Line

The B8 8100 (Bypass) series from Bilstein is designed specifically for light trucks and SUVs requiring advanced suspension tuning. Featuring a bypass body design, these shocks allow independent adjustment of compression and rebound damping via a click adjuster knob. This enables drivers to fine-tune their Toyota FJ Cruiser’s suspension for varying terrain and driving conditions without the need for coilover springs.

Detailed Product Description

This Bilstein shock absorber utilizes a monotube design that provides consistent damping performance and improved heat dissipation, aided by the integrated reservoir. The double adjustable damping system allows separate tuning of compression and rebound forces, giving you control over ride comfort and handling precision. The bypass body design ensures smooth operation without coilover springs, making it suitable for the Toyota FJ Cruiser’s suspension setup. With a robust 60mm piston and 18mm shaft diameter, this shock absorber is built to handle demanding off-road and on-road conditions. The eye lower mount and stem upper mount provide secure attachment points, while the Evo grey finish offers durability against corrosion.

Applications and Problem Solving

• Improves handling and stability on rough or uneven terrain
• Reduces body roll and enhances cornering response
• Minimizes shock fade during extended off-road use
• Allows customizable ride quality through adjustable damping
• Replaces worn or damaged shocks for restored suspension performance

Installation Notes and Tips

Ensure compatibility with Toyota FJ Cruiser models before installation. The shock absorber’s eye lower mount and stem upper mount require proper alignment during installation. Adjust damping settings incrementally using the click adjuster knob to achieve desired ride characteristics. Professional installation is recommended to maintain suspension geometry and safety.

Quality Assurance and Warranty

Bilstein shock absorbers are manufactured to meet strict quality standards, ensuring durability and consistent performance. The B8 8100 (Bypass) shock absorber is built with high-grade materials and precision engineering. Warranty details should be confirmed with the manufacturer or authorized distributor.