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Bilstein 25-329926 Suspension Shock Absorber - Rear
Bilstein B8 5160 Rear Shock for Wrangler
The Bilstein B8 5160 remote reservoir shock absorber is a direct-fit rear suspension upgrade for lifted Jeep Wrangler applications. It combines a monotube design, digressive valving, and added reservoir cooling capacity to support consistent damping on demanding off-road terrain.
Fits 2018-2026 Jeep Wrangler, rear. Part number 25-329926 is built for drivers who want improved wheel travel and more stable shock performance on lifted setups.
Key Features
- Remote reservoir design for increased cooling capacity and added wheel travel
- Monotube internal design for consistent fade-resistant performance
- Velocity-sensitive digressive valving tuned for the application
- Non-adjustable damping for straightforward operation
- 360-degree swivel banjo hose fitting for cleaner routing
- Billet reservoir clamp included where applicable
- Zinc-plated finish for added corrosion resistance
- Direct-fit rear shock absorber for lifted Jeep Wrangler use
Product Details
Bilstein B8 5160 shocks are part of the B8 5160 line, a series focused on lifted truck and SUV suspension applications that need more thermal capacity than a conventional shock. This rear shock absorber uses a 46mm piston, 14mm shaft, and smooth-body monotube construction to maintain controlled damping under repeated compression and rebound cycles. The remote reservoir helps manage heat buildup during off-road driving, while the eye-to-eye 12.8mm upper and lower mounts support a direct-fit installation on the listed Jeep Wrangler rear position. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Common Issues Addressed
- Excessive shock fade during rough trail use
- Reduced rear suspension control on lifted Jeep Wrangler setups
- Heat buildup from repeated compression over uneven terrain
- Harsh or inconsistent damping from worn rear shocks
- Limited wheel travel from a standard shock absorber
Installation Notes
Compatible With 2018-2026 Jeep Wrangler rear applications listed above. Requires appropriate bump stop extensions. Verify collapsed length, extended length, and mount style before installation to confirm suspension geometry on your lifted setup. Part number 25-329926 should be matched to the rear position only.
Quality Assurance
Bilstein designs the B8 5160 line for consistent performance in demanding off-road environments, using a monotube shock body and application-specific valving to support durability and control.
| Brand | Bilstein |
|---|---|
| Part Number | 25-329926 |
| Position | B8 5160, Rear |
| Adjustable Damping | Non-adjustable |
| Billet Reservoir Clamp Included | Yes |
| Body Design | Smooth body (non-coilover) |
| Boot Included | No |
| Collapsed Length (IN) | 18.72 |
| Collapsed Length (MM) | 475.5 |
| Extended Length (IN) | 31.86 |
| Extended Length (MM) | 809.2 |
| Finish | Zinc plated |
| Internal Design | Monotube |
| Lower Mount Type | Eye 12.8mm |
| PartType | Shocks / struts |
| Piston Diameter | 46mm |
| Reservoir | Yes |
| Segment | Light truck |
| Series | B8 5160 |
| Shaft Diameter | 14mm |
| Spring Seat Included | No |
| Stroke/Travel Length (IN) | 13.14 |
| Stroke/Travel Length (mm) | 333.8 |
| Title | Bilstein shock absorbers |
| Upper Mount Type | Eye 12.8mm |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2026 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2025 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2024 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2023 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2022 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2021 | Jeep | Wrangler | Willys | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2020 | Jeep | Wrangler | Unlimited Sport | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2019 | Jeep | Wrangler | Unlimited Sport | Rear | Requires appropriate bump stop extensions; B8 5160 |
| 2018 | Jeep | Wrangler | Unlimited Sport | Rear | Requires appropriate bump stop extensions; B8 5160 |
* 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.