
Vauxhall Firenza 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.
US orders ship in 3 weeks (5 for hard-coated). Delivery in 3–17 business days, depending on location.
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Product information
Every Race Plastics window is custom-made by our experienced team in the UK. Built for motorsport, these polycarbonate windows are lightweight, shatterproof, and far stronger than glass. Unlike acrylics or Perspex, they won’t crack under pressure—giving you peace of mind when you’re pushing hard.
Our standard spec uses 4mm thick polycarbonate, meeting key racing regulations. If you need more strength, we also offer 5mm FIA-compliant windows and hard-coated options for extra durability and scratch resistance.
Windows come in clear, bronze, or grey tints, so you can match the look to your build. You can also add sliders to either or both front doors, depending on how you want to manage airflow.
Window Sliders
Our slider kits are built from the same high-quality polycarbonate as your main windows. Designed for both driver and passenger sides, they’re smooth, secure, and built to last.
You can choose between:
- Smooth operation with three fixed positions, no rattle
- Simple and reliable, with two preset stops
Easy to fit and made to avoid rubbing or scratches, these sliders are ideal whether you need more air on track or better control on the road. For full specs, visit the Window Slider Kits page.
How long does shipping take?
We’ll confirm your order right away. Standard polycarbonate kits are usually built and shipped within 3 weeks. Custom or hard-coated orders may take longer—we’ll reach out to confirm the lead time. If you’ve got a race coming up, let us know and we’ll do what we can to hit your timeline.
Can I install the windows myself?
Yes. Most builds are straightforward and there are plenty of how-to videos online. Unless stated otherwise, our windows are made to fit into standard rubber seals. Need bolt-in versions? Just reach out.
Can I pick up my order?
We usually ship via courier, but yes—collection from our Leeds facility can be arranged. Just drop us a message.
Need to change your order?
Get in touch as soon as you can. We’ll do our best to make changes, but if production’s already started, there may be a cost to amend the order.
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 Vauxhall Firenza rally car
The Vauxhall Firenza, produced between 1971 and 1975, was Vauxhall’s attempt to blend sporty coupe styling with serious performance, taking the fight to rivals like the Ford Capri and Opel Manta. But while the standard Firenza was a solid performer, it was the legendary HP (‘High Performance’) Firenza, also known as the ‘Droopsnoot’, that truly put this car on the map, especially in the world of touring car racing and rallying.
Designed as a sportier version of the Vauxhall Viva HC, the Firenza was available with a range of engines, from modest 1.3-litre and 1.6-litre units up to the 2.3-litre slant-four engine, which was the one to have. Producing around 108 horsepower, this engine gave the lightweight Firenza genuine performance credentials, but Vauxhall wasn’t done yet.
In 1973, Vauxhall unveiled the HP Firenza ‘Droopsnoot’, an aggressive, streamlined version developed with motorsport in mind. Featuring a more aerodynamic nose, a 2.3-litre fuel-injected engine producing 131 horsepower, and upgraded suspension and brakes, this version could hit 0-60 mph in just over 8 seconds, serious performance for a British coupe of the time. The Droopsnoot was built in limited numbers (just 204 units), making it one of the rarest and most desirable Vauxhalls ever produced.
The Firenza’s real impact came on the touring car scene, where it was developed into a serious Group 1 and Group 2 race car. Entering the British Saloon Car Championship (BSCC, later BTCC) and other European touring car events, the Firenza proved to be a capable, high-speed competitor, often battling against the Ford Escort RS2000, BMW 2002, and Alfa Romeo GTV.
Its lightweight body, powerful slant-four engine, and sharp handling made it a serious contender on tight circuits, while its rear-wheel-drive layout ensured it had plenty of oversteer action, making it a favourite among enthusiastic drivers. While it never achieved dominant success like some of its rivals, the Firenza scored podiums and proved that Vauxhall could build a competitive racing coupe.
While Vauxhall was never as heavily involved in factory-backed rallying as Ford or Opel during the 1970s, the Firenza still found its way into privateer rally teams, particularly in the UK and South Africa. The 2.3-litre engine, strong rear-wheel-drive chassis, and durable construction made it a great base for tarmac rally events, where its punchy torque and predictable handling allowed it to take on the likes of the Ford Escort and Opel Kadett GT/E.
One of the most famous rally-built Firenzas was the South African version, where the model saw continued production and development beyond its UK run. Upgraded versions with Weber carburettors, hotter cams, and rally-tuned suspension made it a favourite among privateer teams, who found it to be a rugged and entertaining rally machine.
Despite its limited production numbers and underdog status, the Firenza is remembered as one of Vauxhall’s most exciting performance cars. The Droopsnoot version, in particular, has become a collector’s item, while its impact on touring car and rally history has made it a cult classic among Vauxhall enthusiasts.
In the world of historic racing, the Firenza still makes appearances in classic touring car events, where its aggressive styling, howling slant-four engine, and rear-wheel-drive antics continue to turn heads. It may not have been the most dominant car of its era, but it proved that Vauxhall could take the fight to the best, and look damn good doing it.

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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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.
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Want some Window Advice?
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Why Polycarbonate Windows?
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Our Frequently Asked Questions
Find out moreGet the answers to key questions on products and services, including deliveries, collections and timescales.
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