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Bilstein 25-326048 Suspension Shock Absorber - Rear Left
Bilstein B8 8100 (Bypass) Shock Absorber Overview
The Bilstein B8 8100 (Bypass) shock absorber, part number 25-326048, is engineered for Toyota Tundra light trucks requiring advanced suspension performance. Designed with a monotube internal structure and bypass body, this shock absorber offers precise control over compression and rebound damping.
- Double adjustable compression and rebound damping with click adjuster knob
- Bypass body design (non-coilover)
- Monotube internal design for consistent performance
- Reservoir included for improved heat dissipation
- Collapsed length: 15.75 inches (400 mm); Extended length: 25.88 inches (657.4 mm)
- 60mm piston diameter and 18mm shaft diameter
- Eye lower mount (12.4mm) and stem upper mount
- 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 like the Toyota Tundra, focusing on adjustable damping through a bypass body design. This non-coilover shock absorber allows for fine-tuning of both compression and rebound settings, providing tailored suspension response for varying driving conditions and loads.
Detailed Product Description
This Bilstein shock absorber features a monotube internal design that enhances heat dissipation and maintains consistent damping performance under demanding conditions. The bypass body allows for double adjustable damping, enabling drivers to customize compression and rebound independently via a click adjuster knob. The included reservoir improves fluid capacity and cooling, which helps reduce fade during extended use. With a collapsed length of 15.75 inches and an extended length of 25.88 inches, this shock absorber fits the Toyota Tundra's suspension geometry precisely. The 60mm piston and 18mm shaft diameters contribute to stable and responsive handling, while the eye lower mount and stem upper mount ensure secure installation.
Applications and Problem Solving
- Improves handling and stability for Toyota Tundra light trucks
- Reduces suspension fade during heavy-duty or off-road use
- Allows fine-tuning of ride comfort and performance with adjustable damping
- Addresses issues with inconsistent shock response under load
- Enhances suspension durability with monotube and reservoir design
Installation Notes and Tips
Ensure compatibility with Toyota Tundra models before installation. The shock absorber features an eye lower mount (12.4mm) and stem upper mount, which should align with factory mounting points. Adjust damping settings after installation to match driving preferences and load conditions. No boot or spring seat is included, so verify existing suspension components are compatible.
Quality Assurance
Bilstein shock absorbers are manufactured to meet strict quality standards, featuring durable materials and precision engineering. The Evo grey finish provides corrosion resistance for extended service life. Please consult Bilstein or authorized distributors for warranty details specific to part number 25-326048.
| Brand | Bilstein |
| Part Number | 25-326048 |
| Position | B8 8100 (Bypass), Rear Left |
| Adjustable Damping | Double adjustable compression and rebound with click adjuster kno |
| Body Design | Bypass body (non-coilover) |
| Boot Included | No |
| Collapsed Length (IN) | 15.75 |
| Collapsed Length (MM) | 400.0 |
| Extended Length (IN) | 25.88 |
| Extended Length (MM) | 657.4 |
| Finish | Evo grey |
| Internal Design | Monotube |
| Lower Mount Type | Eye 12.4mm |
| PartType | Shocks / struts |
| Piston Diameter | 60mm |
| Reservoir | Yes |
| Segment | Light truck |
| Series | B8 8100 (bypass) |
| Shaft Diameter | 18mm |
| Spring Seat Included | No |
| Title | Bilstein shock absorbers |
| Upper Mount Type | Stem |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2021 | Toyota | Tundra | Trail | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2020 | Toyota | Tundra | TRD Pro | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2019 | Toyota | Tundra | TRD Pro | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2018 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2017 | Toyota | Tundra | TRD Pro | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2016 | Toyota | Tundra | TRD Pro | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2015 | Toyota | Tundra | TRD Pro | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2014 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2013 | Toyota | Tundra | Platinum | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2012 | Toyota | Tundra | Limited | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2011 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2010 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2009 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2008 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
| 2007 | Toyota | Tundra | SR5 | Rear Left | Fits Vehicles With 0-2.5" Rear Lift; B8 8100 (Bypass) |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.