Description
Overview:
This overrun coupling damper, Kit 255 (MPN 764 091), is a service replacement shock absorber used within the drawtube assembly of braked trailer couplings. It is designed to control and damp the in-and-out movement of the coupling under braking, helping to prevent snatch, reduce shock loads through the towing vehicle and trailer, and maintain consistent braking performance. The unit is intended for Bradley HU10, HU12 and HU14 overrun couplings that specify Kit 255, making it suitable for a wide range of trailers used in plant hire, construction, agriculture, towing and general transport. The damper features a robust metal-bodied construction engineered for repeated duty in harsh operating conditions typically encountered by commercial and plant trailers. Replacing a worn or weak damper restores correct overrun function and can improve brake response, stability and coupling service life when used with correctly maintained brake linkages and running gear.
Key Features:
- Service replacement overrun damper for Bradley Kit 255 couplings
- Compatible with HU10, HU12 and HU14 overrun coupling models (Kit 255 specification)
- Metal-bodied shock absorber designed for repeated duty in towing applications
- Controls drawtube movement to reduce snatch and improve braking consistency
- Direct-fit to the specified Kit 255 assemblies with standard fixings on the coupling
- Suited to braked trailers within the rated capacity of the matching coupling
- Appropriate for commercial, plant and agricultural trailer use
- Helps restore correct overrun operation when replacing a fatigued or leaking damper
Typical Applications:
Installed inside the overrun coupling housing on braked trailers to damp the longitudinal travel of the drawtube during braking. Commonly used on plant trailers, builders' trailers, general-duty trailers and similar commercial towed equipment that use Bradley HU10, HU12 or HU14 overrun couplings requiring Kit 255. Positioned between the coupling body and the moving drawtube/linkage to manage compression and rebound under load.
Also known as:
Bradley Kit 255 Overrun Damper; Overrun Coupler Shock Absorber; Coupling Shock; Drawtube Damper; Brake Overrun Damper
Product Specifications
| L&S Part No. | 764 091 |
|---|---|
| Part Type | Genuine Part |

