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Add Reservoir Cooling and Control to the Ram 1500
Bilstein 25-325102 is a B8 5160 rear-left remote-reservoir shock for compatible 2019-2026 Ram 1500 trucks with 0 to 2 inches of rear lift. Its 46mm monotube body, 10.06 inches of travel, and vehicle-specific digressive valving increase heat capacity and control on rough surfaces.
Key Features
- Remote reservoir increases oil volume and cooling capacity
- 46mm gas-pressure monotube construction
- 10.06-inch stroke with application-specific digressive valving
- Rear-left configuration for 0 to 2 inches of lift
- 360-degree swivel banjo hose fitting and billet reservoir clamp
- Bilstein 25-325102 must be installed on the left side; the matching right shock is a different part
- Use the exact 25-325102 configuration; related Bilstein part numbers can have different dimensions, sides, or fitment
Fitment
| Year | Make | Model | Application Notes |
|---|---|---|---|
| 2019-2026 | Ram | 1500 | Rear left; 0-2 in. lift; verify suspension package and rear configuration |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | 25-325102 |
| Series | B8 5160 |
| Position | Rear left |
| Collapsed length | 15.69 in. / 398.5 mm |
| Extended length | 25.75 in. / 654.0 mm |
| Travel | 10.06 in. |
| Upper mount | Stem |
| Lower mount | 14.1 mm eye |
| Reservoir | Remote; billet clamp included |
| Piston diameter | 46 mm |
| Damping | Non-adjustable |
| UPC | 651860894140 |
| Warranty | Bilstein limited 2-year warranty |
What's Included
- One rear-left B8 5160 shock absorber
- Remote reservoir and hose assembly
- Billet reservoir clamp
- Application-specific mounting hardware as supplied by Bilstein
About Bilstein
Bilstein develops OE and aftermarket monotube suspension systems using application-specific testing, gas-pressure technology, and controlled manufacturing standards. 25-325102 is engineered around the application and dimensions listed above.
Related Parts
- No internal recommendation is linked because a compatible companion part must be verified for the exact vehicle, suspension option, side, and ride height before purchase.
FAQ
What is the 25-325102?It is the Bilstein B8 5160 shock absorbers described on this page, supplied in the verified configuration and quantity shown above.
Is this sold as a pair or individually?One rear-left B8 5160 shock absorber; Remote reservoir and hose assembly; Billet reservoir clamp; Application-specific mounting hardware as supplied by Bilstein. The included-components section controls the package quantity.
Is the damping adjustable?Non-adjustable
Will this fit every trim of the listed vehicle?No. Confirm the year, model, suspension option, drivetrain, engine, ride height, and position notes before ordering.
Does installation require an alignment?An alignment is recommended whenever suspension geometry or ride height is changed, and after strut or spring service when specified by the vehicle manufacturer.
Can factory hardware be reused?Reuse hardware only when the Bilstein and vehicle service instructions allow it and the hardware passes inspection. Replace one-time-use or damaged fasteners.
What warranty applies?Bilstein limited 2-year warranty
What should be checked before installation?Compare the part number, side, mount style, suspension option, ride height, and included components with the vehicle and current Bilstein application data.
Installation Instructions
- Confirm the vehicle, suspension option, ride height, side, and mount configuration before installing Bilstein 25-325102.
- Support the vehicle safely and follow the factory service procedure for spring or damper removal.
- Inspect mounts, bushings, fasteners, and adjacent suspension components; replace worn or one-time-use hardware as required.
- Install the component in the specified orientation and route any reservoir hose away from heat, abrasion, and moving parts.
- Torque all fasteners at the suspension position specified by the vehicle and Bilstein instructions.
- Set the vehicle on the ground, verify clearance and ride height, road-test carefully, and perform an alignment when required.
California Proposition 65: Cancer and reproductive harm. See www.P65Warnings.ca.gov.
Bilstein
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