Lancia Delta S4 Lightweight GRP Door – Left or Right

This Delta S4 GRP door is a lightweight motorsport-spec replacement designed for the Lancia Delta S4. It provides a strong yet weight-saving upgrade, which makes it ideal for rally, hill climb and performance-focused builds. You can choose either the Left or Right side, and many owners install both to achieve a balanced reduction in weight.

Because the door includes an inner liner and hinge mounts, the installation process becomes much easier. The window area features an aperture only, so you can choose the glazing setup that best suits your project. In addition, the door arrives in a white gel coat finish, ready for your preparation and paint.

This lightweight Lancia Delta S4 GRP door reduces overall vehicle weight, yet it still offers the strength required for motorsport use. It suits restoration work, Group B recreation builds and competition cars that need a lighter panel without compromising durability.

If you are gathering more body panels for your project, you can browse our Lancia Delta S4 body panels here to find matching components. For further insight into the Delta S4’s engineering and Group B history, Rally Group B provides useful background and technical information.

❓ SEO FAQ – Lancia Delta S4 Lightweight GRP Door

Is this Delta S4 GRP door suitable for motorsport use?
Yes. It suits rally, hill climb and fast-road applications due to its lightweight construction and strong GRP material.

Do you supply the Left and Right doors separately?
Yes, you can order the Left or Right door individually. However, many owners choose to replace both at the same time to keep the car balanced.

Does the door include hinge mounts and an inner liner?
Yes. It comes with both the inner liner and hinge mounts included, which helps with fitment and results in a cleaner interior finish.

What glazing works with this door?
The door uses an aperture-only design, so you can select the glazing type you prefer. Polycarbonate windows are a popular choice for motorsport builds.

Is the GRP door supplied painted?
No, the door is supplied in a white gel coat finish. You will need to prepare and paint it before final installation.