Bilstein 25-291322 Suspension Shock Absorber - Rear Left

Bilstein B8 8100 (Bypass) Shock Absorber Overview

The Bilstein B8 8100 (Bypass) shock absorber, part number 25-291322, is engineered for Jeep Wrangler and Wrangler JK models. Designed to enhance suspension performance, this monotube bypass shock absorber offers precise control over compression and rebound damping for improved ride quality and handling.

• Double adjustable compression and rebound damping with click adjuster knob
• Bypass body design (non-coilover) for optimized suspension travel
• Monotube internal design with 60mm piston diameter
• Includes remote reservoir for consistent performance under load
• Collapsed length: 17.17 inches (436 mm); Extended length: 27.83 inches (707 mm)
• Lower mount: 12.1mm eye; Upper mount: bar pin
• Finished in durable Evo grey
• Shaft diameter: 18mm

About the B8 8100 (Bypass) Product Line

The Bilstein B8 8100 (Bypass) series is designed specifically for light trucks and off-road vehicles like the Jeep Wrangler. This line features bypass shock absorbers that allow for independent adjustment of compression and rebound damping, providing drivers with the ability to fine-tune suspension response for varying terrain and driving conditions. The non-coilover bypass body design ensures extended suspension travel and improved wheel control.

Detailed Product Description

This Bilstein shock absorber utilizes a monotube design with a large 60mm piston to deliver consistent damping performance. The double adjustable damping system allows for precise tuning of both compression and rebound forces via a click adjuster knob, enabling customization to driver preference and load conditions. The bypass body design, combined with a remote reservoir, helps dissipate heat and maintain performance during demanding off-road use. With a collapsed length of 17.17 inches and an extended length of 27.83 inches, this shock absorber fits Jeep Wrangler and Wrangler JK models requiring these dimensions. The Evo grey finish provides corrosion resistance and a professional appearance.

Applications and Problem Solving

• Improves handling and stability on rough terrain for Jeep Wrangler and Wrangler JK
• Reduces suspension fade during extended off-road driving
• Allows fine-tuning of ride comfort and control with adjustable damping
• Enhances wheel articulation and suspension travel without coilover setup
• Addresses issues with stock shocks lacking adjustability and heat dissipation

Installation Notes and Tips

Ensure compatibility with Jeep Wrangler and Wrangler JK models before installation. The shock absorber mounts with a 12.1mm eye at the lower end and a bar pin at the upper end. No spring seat or boot is included, so verify existing suspension components are compatible. Adjust damping settings incrementally using the click adjuster knob to achieve desired ride characteristics. Professional installation is recommended for optimal performance and safety.

Quality Assurance

Bilstein shock absorbers are manufactured to strict quality standards with durable materials and precision engineering. The monotube design and remote reservoir contribute to long service life and consistent performance. While specific warranty details are not provided here, Bilstein products typically come with manufacturer-backed warranties to ensure reliability and customer satisfaction.