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Bilstein 25-305234 Suspension Shock Absorber - Front Left
Bilstein B8 8100 (Bypass) Suspension Shock Absorber Overview
The Bilstein B8 8100 (Bypass) shock absorber, part number 25-305234, is engineered for drivers seeking precise suspension control and enhanced vehicle handling. Designed with a monotube internal structure and bypass body, this shock absorber offers adjustable damping for both compression and rebound, making it suitable for a range of driving conditions.
- Double adjustable damping: compression and rebound
- Bypass body design (non-coilover)
- 60mm internal body diameter
- Monotube internal design for consistent performance
- Reservoir included for improved heat dissipation
- Zinc plated finish for corrosion resistance
- Eye-type upper and lower mounts (12.8mm)
- Collapsed length: 17.17 inches (436.2 mm)
- Extended length: 27.24 inches (692.0 mm)
Detailed Features and Design
The Bilstein B8 8100 (Bypass) series is specifically designed to provide adjustable suspension performance through its double adjustable damping system, allowing fine-tuning of both compression and rebound forces. This feature is critical for drivers who require tailored suspension settings for different terrains or driving styles. The bypass body design, which is non-coilover, offers a robust structure with a 60mm internal diameter monotube, ensuring durability and consistent shock absorption. The inclusion of a remote reservoir helps manage heat buildup during extended use, maintaining shock performance under demanding conditions. Both upper and lower mounts use 12.8mm eyelets, facilitating straightforward installation on compatible vehicles.
About the B8 8100 (Bypass) Product Line
The B8 8100 (Bypass) line from Bilstein focuses on providing adjustable bypass shocks that are ideal for off-road and performance applications. Unlike coilover shocks, the bypass design allows for external damping adjustment without compromising the shock body integrity. This product line is engineered to deliver precise control over suspension dynamics, making it suitable for vehicles requiring enhanced handling and ride quality under variable load and terrain conditions.
Common Applications and Problem Solving
- Improves vehicle stability on uneven or rough terrain
- Reduces body roll during cornering and aggressive driving
- Enhances ride comfort by adjusting compression and rebound
- Addresses shock fade caused by heat buildup during extended use
- Replaces worn or damaged factory shocks for restored suspension performance
Installation Notes and Tips
When installing the Bilstein 25-305234 shock absorber, ensure compatibility with your vehicle’s suspension setup, particularly eyelet mount sizes of 12.8mm. The shock’s collapsed and extended lengths (17.17 inches and 27.24 inches respectively) should be verified against your vehicle’s specifications. Since this is a bypass body shock absorber, no coilover components are involved. Adjust damping settings after installation to match your driving preferences and conditions.
Quality Assurance and Warranty
Bilstein shock absorbers are manufactured to meet strict quality standards, featuring corrosion-resistant zinc plating and durable monotube construction. The B8 8100 (Bypass) series is designed for long-lasting performance under demanding conditions. Please refer to Bilstein’s official warranty policy for specific coverage details related to part number 25-305234.
| Brand | Bilstein |
| Part Number | 25-305234 |
| Adjustable Damping | Double adjustable – compression and rebound |
| Body Design | Bypass body (non-coilover) |
| Body Diameter (ID) | 60mm |
| Boot Included | No |
| Collapsed Length (IN) | 17.17 |
| Collapsed Length (MM) | 436.2 |
| Extended Length (IN) | 27.24 |
| Extended Length (MM) | 692.0 |
| Finish | Zinc plated |
| Internal Design | Monotube |
| Lower Mount Type | Eye 12.8mm |
| Reservoir | Yes |
| Series | B8 8100 (bypass) |
| Title | Bilstein shock absorbers |
| Upper Mount Type | Eye 12.8mm |
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* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.