Description
Overview:
The 50mm overrun coupling head kit (MPN 764 120) is a heavy-duty cast steel assembly for braked trailers up to 3000 kg (3.0 tonnes). It provides a robust connection to a 50 mm (1.97 in) towball and is intended for round tube drawbars. The body is zinc plated for corrosion resistance and features a cast ring handle for positive operation. The kit includes adaptor sleeves to suit 35 mm (1.38 in), 40 mm (1.57 in) and 45 mm (1.77 in) round drawbars, making it suitable for replacing a wide range of existing coupling heads. Mounting holes are provided on both the side and top faces for installation flexibility. Supplied with 2 x M12 x 80 mm fixings, lock nuts and washers; use grade 10.9 bolts as required. R55 approved (D27, S150). Supplied without a lock; accepts the MP201L lock if required.
Key Features:
- Capacity: For braked trailers up to 3000 kg (3.0 tonnes)
- Hitch size: 50 mm (1.97 in) towball connection
- Drawbar fitment: Suits 50 mm round tube; adaptor sleeves for 35/40/45 mm (1.38/1.57/1.77 in) tubes included
- Construction: Heavy-duty cast steel with zinc plated finish
- Operation: Cast ring handle with colour-coded wear and correct attachment indicator
- Fixings: Supplied with 2 x M12 x 80 mm bolts, lock nuts and washers; minimum grade 10.9 bolts as required
- Mounting: Hole patterns on side and top faces for flexible installation
- Compliance: ECE R55 approved (D value 27 kN, S value 150 kg)
- Supplied without lock; compatible with Maypole MP201L hitch lock
- Universal replacement for overrun heads including Knott Avonride 575003, KF27A, KFG27, and Ifor Williams PO0301
Typical Applications:
Used on braked trailers where a 50 mm ball coupling is required, including plant trailers, flatbeds, general purpose and livestock trailers, and hire fleet refurbishments. Suitable as a replacement overrun coupling head for units cross-referenced to Knott Avonride 575003, KF27A, KFG27 and Ifor Williams PO0301, using the supplied 35 mm, 40 mm or 45 mm adaptor sleeves to suit the existing round drawbar.
Also known as:
Trailer coupling head, 50 mm tow hitch, overrun hitch head, ball coupling, hitch head kit, Maypole part number MP2030, Knott/Avonride 575003, KF27A, KFG27, Ifor Williams PO0301
Product Specifications
| L&S Part No. | 764 120 |
|---|---|
| Part Type | Genuine Part |

