Rotationally moulded truck mudguards do not fade in the sun like injection moulded ones largely due to differences in material composition and UV stabilisation. Here's a clear breakdown of why rotationally moulded mudguards perform better in harsh UV environments: UV-Stabilised Polyethylene Rotationally moulded mudguards are typically made from polyethylene that includes UV stabilisers throughout the entire material. This means the UV protection is built into every part of the guard, not just on the surface. As the sun wears away the outer layer over time, the material underneath is just as UV-resistant. Injection moulded parts often rely on a surface-only layer for UV resistance, which can break down or chalk quickly in harsh sunlight. One-Piece Construction, No Stress Points Rotational moulding creates seamless, stress-free parts, reducing the risk of micro-cracks or stress whitening, which can accelerate UV-related damage and make fading worse. Injection moulded parts are often more brittle and prone to stress marks, which become more visible when exposed to sun. Colour is Fully Infused In rotomoulded mudguards, the colour is infused throughout the entire wall thickness, so even if the outer layer wears slightly, the guard still looks the same. Injection moulded guards can sometimes have pigment concentrated near the surface, meaning they appear patchy or faded sooner. Proven Long-Term Durability At Dynaplas, we've been manufacturing rotomoulded polyethylene truck mudguards since 1978, and many are still in service decades later - without the cracking, chalking, or fading seen in lower-grade, imported injection moulded alternatives.

Dynaplas Truck Mudguard Do Not Fade or Crack 5 Year Test