
Lancia Integralia Polycarbonate Windows
Create your ideal windows below, or contact the team if you have a specific requirement.
Customise your windows:
Note: Unless stated, all windows are sized to fit into rubber seals. If you need bolt-in sizing, then please contact us.
Shipping calculated at checkout.
Orders ship in 3 weeks (5 for hard-coated). Delivery in 3–17 business days, depending on location.
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Product information
Race Plastics polycarbonate windows are handcrafted to order by our expert UK team. Designed for motorsport and high-performance use, they’re lightweight, tough, and completely shatterproof—unlike glass or standard acrylics, which can crack under stress.
Our standard windows use 4mm polycarbonate to meet Motorsport UK regulations. We also offer 5mm options that are FIA compliant, plus hard-coated variants for added durability and resistance to scratching.
All windows are available in clear, bronze, or grey tint to suit your vehicle’s design. You can also add window sliders to either or both front doors, depending on your setup.
Window Sliders
Each slider kit is made from the same polycarbonate as your chosen windows. Designed for both driver and passenger sides, these sliders are reliable, practical, and easy to install.
Choose between:
- Three-position locking with a smooth, rattle-free action
- Simple two-position setup for fast and secure use
Sliders are engineered to avoid scratching and sit flush with your window kit. Ideal for improving airflow on track days or road builds. More info is available on our Window Slider Kits page.
Shipping times
Once your order’s confirmed, we’ll get started. Most standard orders are manufactured and dispatched within 3 weeks. Custom or hard-coated versions may take a little longer—we’ll contact you with a lead time. If you need your order by a specific date, let us know and we’ll aim to meet it.
Can I fit the windows myself?
Yes, installation is usually straightforward. There are helpful videos online, and our windows are designed to fit into standard rubber seals unless otherwise noted. If you need bolt-in variants, just contact us.
Can I collect my order?
Collection from our UK facility is available by arrangement. Most international orders are shipped, but we’re happy to sort collection if needed—just get in touch.
Want to change your order?
Reach out as early as possible. We’ll always try to accommodate changes, but if manufacturing has already started, there may be a charge.
Key product info:
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Expertly crafted in the UK
All of our windows and sliders are hand made to order by our team in the UK.
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Motorsport compliant
Our standard windows are made from UK compliant 4mm Polycarbonate.
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FIA & hard-coated options
We also offer FIA compliant 5mm & hard-coated options.
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Road legal warning
Always check your local vehicle regulations before fitting.
Not found what you need?
Need a single window, or have a special requirement, no problem. Just let us know what you need.
The Lancia Integralia rally car
Some cars are fast. Some cars are iconic. And then there’s the Lancia Delta Integrale, a car that didn’t just dominate rallying but changed the game entirely. Born in the fire and fury of Group A rallying, the Integrale wasn’t just Lancia’s answer to the competition, it was their declaration of war. This car didn’t just win. It destroyed the opposition, taking six consecutive World Rally Championships from 1987 to 1992, a record that still stands today.
But let’s rewind a bit. The Lancia Delta started life in 1979 as a front-wheel-drive hatchback, a perfectly sensible and stylish car designed by Giorgetto Giugiaro. It wasn’t built for motorsport, until Lancia decided it needed a four-wheel-drive weapon to replace the legendary 037 and the monstrous Delta S4. Enter the Delta HF 4WD in 1986, the first rally-prepped version that would lay the foundation for the Integrale dynasty.
By 1987, Lancia had refined the formula, introducing the Delta HF Integrale, a road-going homologation special that was essentially a rally car in disguise. It had a 2.0-litre turbocharged engine, four-wheel drive, and a chassis so perfectly set up for cornering that it felt like it could defy physics. With 185 horsepower in early models (eventually climbing to 215hp in the Evoluzione versions), it wasn’t the most powerful thing on the road, but it didn’t need to be. The real magic was in the handling. The Integrale could carve through corners at speeds that made supercars nervous. It had lightning-fast steering, perfect balance, and a chassis that seemed to read the road before you even turned the wheel.
And on the rally stage? It was unbeatable. From 1987 to 1992, the Integrale won six consecutive WRC manufacturer’s titles, with legendary drivers like Juha Kankkunen and Miki Biasion at the wheel. Whether it was snow, gravel, or tarmac, the Integrale just devoured every surface it touched. It could power through snow-covered Scandinavian forests one weekend and tear up the winding tarmac roads of Corsica the next, always coming out on top.
Lancia kept improving it. The 1989 Integrale 16V brought more power and better response, while the 1991 Integrale Evoluzione (Evo 1) widened the track, improved aerodynamics, and gave it that aggressive, wide-arch stance that made it look as fast as it was. By 1993, the final Evoluzione II model pushed out 215hp, added more refinements, and cemented the Integrale as one of the greatest homologation specials ever built.
But then, in 1992, Lancia pulled out of rallying. Their masterpiece had done its job. The Integrale had won everything there was to win, and rather than risk losing their streak, Lancia walked away at the top. It was a move that only added to the car’s mythical status.
Even today, the Delta Integrale remains one of the most beloved rally cars of all time. It’s not just about the numbers or the trophies, it’s about the feeling. Driving an Integrale is an event, a connection between machine and driver that modern cars just can’t replicate. The boost surge, the tight gear ratios, the way it grips and slides at the same time, it’s pure rally magic in road-going form.
Owning one today isn’t just about having a fast car. It’s about owning a piece of motorsport history, a car that represents the golden era of rallying, when manufacturers built cars to win championships first and sell them second. The Integrale isn’t just a classic, it’s one of the greatest performance cars ever made.
If you ever get the chance to drive one, take it. Because once you experience what an Integrale can do, you’ll never look at another hot hatch the same way again.

Thought about a slider kit?
Our easy retro fit window slider kits are the essential addition to your racing windows with standard and advanced kits available.
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Let customers speak for us
from 7 reviewsVery helpfull
Nicely finished, very well packed, arrived on time and great value. Thanks!
Windows are easy to fit and look good
Would highly recommend Race plastics. I have used them now on 3 occasions, their products and their customer service are the best I have used, Thank you R.P....
Perfekt fitting, fast delivery.
Thank You.
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Our Frequently Asked Questions
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