Product details
Maypole MP500B heavy-duty 50mm towball – silver
Need a tough towball that won’t let you down? The Maypole MP500B is an E‑approved, heavy-duty 50mm towball made for proper towing work. It’s not flashy, but it’s built to do the job: solid materials, a corrosion‑resistant silver finish and the clear technical figures you need when matching it to your vehicle and trailer.
Key features and specifications
Quick overview — this is a standard 50mm towball in a silver finish, designed for heavy-duty use. It fits with 2 x M16 mounting bolts, has a D value of 17.2 kN and an S value of 350 kg. Item weight is about 1.7 kg and the manufacturer reference is B4R-500B. It’s E‑approved, so it meets the relevant European safety standards.
- 50mm ball size – suits the common couplings found on many trailers and caravans.
- 2 x M16 mounting holes – bolts securely to compatible tow plates.
- D value 17.2 kN – indicates the dynamic strength of the coupling.
- S value 350 kg – vertical nose load rating; handy when checking limits against trailer/vehicle plates.
- Durable silver finish – resists rust and everyday wear.
Why this towball is useful
If towing is something you do for weekends away, DIY runs or moving kit about, having a dependable towball saves a lot of faff. The MP500B lays out the key ratings clearly, so it’s much easier to check compatibility and avoid surprises — especially useful in winter when everything’s greasier and colder than it ought to be.
Installation, compatibility and a few tips
The MP500B fits using two M16 bolts to a compatible tow plate or flange. It’s aimed at folks who already have the correct towbar mounting plate or who need to replace a worn or corroded towball. Before fitting, always check the vehicle and trailer plates for their declared D and S values to make sure they’re compatible. If you’re unsure about any figures, have a quick look at the vehicle’s towbar plate or speak to a professional installer — better safe than sorry.
Typical use cases
- Pulling a trailer for DIY or garden waste — where a solid, rated towball is needed.
- Towing small caravans and leisure trailers that use a standard 50mm coupling.
- Replacing an old or corroded towball to restore a safe towing setup.
One common point of confusion: the 350 kg S value is the vertical nose load, not the total trailer weight. It’s the D value, together with the vehicle and trailer ratings, that determine overall suitability. If in doubt, check the vehicle handbook or the trailer plate before you set off. All told, the MP500B is a straightforward, no‑nonsense towball — clear specs, a tidy finish and the kind of durability you want for heavy‑duty towing.