It’s a fair question. A set of generic mudflaps for a specific car on eBay costs around £20-30. A precision-fit rally style mudflap kit from PolyWard starts at around £60 for the simplest kit and goes up from there, depending on the vehicle and the bracket complexity. That’s a meaningful price difference, and it deserves an honest explanation – not a marketing answer, but an actual breakdown of where the cost comes from.
We make these products ourselves in the UK. Here’s what goes into the price.
The tooling
Every vehicle-specific mudflap kit requires its own cutting dies. These are tools made from plywood and a precision steel rule that cuts the exact shape from a 4mm PVC sheet when used with our hydraulic swing arm press. We don’t use a single universal die and cut everything to a rough shape. Each vehicle has its own die, made specifically for that car’s arch profile. Each car will need at least 2 cutting tools, one for the front mudflaps and one for the rear mudflaps. Sometimes three dies are needed if there is a difference between sides, for example, exhaust routing or heat shields.
Getting that die right takes time. The process starts with the actual car. Making cardboard mockups of the mudflap shape, testing mounting hole positions against the arch liner, and checking fit against the specific mounting points on that vehicle. That mockup then gets refined in CAD, printed at 1:1 scale on a medium format printer, cut out precisely, and then checked against the car again. This process typically needs two or three iterations before the shape and hole positions are exactly right. The whole process from first mockup to production-ready die takes a few days per vehicle.
Once the dies are made, it’s permanent. The first set is fit to the car as a final check and to get some product photos. Every vehicle specific rally style mudflap kit for that car is cut from those dies from that point forward. The development cost of getting there is built into the product. As a rough example, it costs between £200 and £300 per cutting die. A generic eBay mudflap is typically a one-size-fits-all shape designed to roughly fit as many cars as possible. It is unlikely that it went through the same precise fit, with an actual car to hand to check against.
The hardware
Another point is that often, the generic mudflap sets are typically sold as a rear pair only, and usually come with a few self-tapping screws or no fixings at all. Custom brackets fit to accommodate a well-fitting, aggressive-looking set of mudflaps are out of the question altogether.
A PolyWard rally style mudflap kit includes everything needed to fit four mudflaps to all four corners of a specific car. What’s in that hardware varies by vehicle. Some kits include metal U-clip brackets, stainless steel powder-coated brackets to create offsets, fill voids and provide stability, screws in multiple lengths, plastic washers, spacers, fir tree clips, double-sided adhesive tape, and alcohol wipes for surface preparation.
On the more hardware-intensive kits, such as the Fiesta ST Mk7 and Focus Mk3, both of which have more complex mounting arrangements, the hardware alone costs us around £12 at production quantities with bulk ordering on fixings and screws. That’s before the PVC material, the cutting die cost, the packaging, and the dispatch.
The £25 eBay set doesn’t include any of that. The price comparison isn’t mudflap vs mudflap, it’s more like a complete kit with all hardware vs two generic fit and hope for the best bits of plastic that will fit with work, but don’t provide a “look” or durability.
The material
Generic mudflaps are typically made from hard moulded plastic or sometimes a thinner PVC. The exact thickness and material specification are not always stated in the listing. PolyWard’s minimum specification for rally style mudflaps is 4mm PVC, not 3mm or 3.2mm, to save costs. We use this standard because thinner or weaker materials do not hold up over time, and do not provide the right look if they are too flappy or too thin. If you are interested in the expected longevity of a set of rally style mudflaps, we cover it further in our rally style mudflap durability guide.
Additionally, our material is UV-stable, handles cold UK temperatures without becoming brittle, and flexes on impact rather than cracking. It’s the correct material for a mudflap that needs to last rather than hit a price point.
A harder moulded plastic generic mudflap in a UK winter, particularly on a lowered car that sits close to the road surface, catching stone impacts and kerbs, can crack and break off far too easily. It may last a few months, it may last a year. When it cracks or breaks away from its mounting, you need to buy another set.
For a full comparison of hard plastic generic mudflaps versus 4mm PVC rally style sets, see our hard plastic vs PVC mudflap comparison.
The maths
The cheapest PolyWard rally style mudflap kit, currently the Focus Mk2 ST225, which doesn’t require brackets or metalwork beyond basic fixings, is around £60. That includes four mudflaps shaped for this specific car, all required fixings, printed instructions, same-day dispatch, and a 30-day return policy.
A generic eBay set costs £20-30 and may well only cover two mudflaps, rear only, with no fixings, no vehicle-specific shape, and no meaningful material specification.
To make a fair comparison, you need to account for:
- Four corners vs two – a generic rear-only set needs to be doubled to cover the whole car, so £30-60 before fixings
- Fixings – add £5-15 for brackets and hardware, depending on the vehicle
- Replacement – if a generic set lasts 12 months before cracking or failing, you’re buying it again
At that point, the price gap narrows significantly. Buying a generic set twice in 18 months costs the same as buying a PolyWard set once, and you’ve had the fitting hassle twice, the poor arch fit throughout, and the visible difference in quality every time you look at your car.
That’s not a marketing argument. It’s just the maths.
What you’re actually paying for
When you buy a PolyWard rally style mudflap kit, you’re paying for:
A cutting die that took days to develop on the actual car the kit is made for. Material at the correct specification for a product that needs to last. Hardware that covers all four corners of a specific vehicle without improvisation. Same-day dispatch from a UK workshop that holds finished stock rather than making to order. A 30-day return policy. Support from the person who designed and built the product.
None of that is present in a £25 eBay set. Some of it matters more to some buyers than others. If you own a beater and need basic splash protection for a year, the generic set is fine. If you own a modified Fiesta ST or Focus ST that you’ve spent money building properly, the choice between a cheaper generic set and a £60 precision-fit kit is a straightforward one.
See the full range of PolyWard rally style mudflaps – vehicle-specific kits for the Ford Fiesta ST, Ford Focus ST225, Ford Focus ST250, Ford Focus RS Mk2, Seat Ibiza FR, Abarth 595 and 695, and Fiat 500. UK-made, same-day dispatch, 30-day returns.
Precision fit, UK made. Available for the following vehicles:
