
Lotus Exige S1 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.
Orders are dispatched within 3 weeks, for hard-coated allow 5 weeks.
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Product information
Our polycarbonate windows are hand crafted to order by our experienced UK based team. They are designed to be safe, strong and lightweight, making them ideal for motorsport. They are much stronger than glass and shatterproof, unlike Perspex and other acrylics, so you are well protected whilst driving.
Our standard windows are manufactured from 4mm thick polycarbonate to comply with Motorsport UK regulations, whilst we also offer 5mm FIA compliant and hard-coated options for those looking tougher windows.
All of our windows are available in a choice of clear, bronze or grey polycarbonate so can choose the windows that best suit your car. You also have the option to add window sliders to either one or both of the front door windows depending on your preference.
Window sliders
Upgrade your vehicle with the Race Plastics Window Slider Kit, designed for both driver and navigator sides. Crafted from the same high-quality polycarbonate as your chosen window, these sliders ensure seamless integration and durability. Choose between two locking systems: the Click-Click Bearing Lock for smooth, rattle-free operation with three adjustable positions, or the Split-Pin Lock for a simple, secure, and reliable solution with two preset positions.
Engineered for flawless fitment and effortless installation, our sliders prevent rubbing and scratching, keeping your windows looking sharp. Whether you need maximum airflow on the track or controlled ventilation on the road, this upgrade delivers race-ready performance. For more details, check out our Window Slider Kits.
How long does an order take to ship?
We will confirm receipt of your order straight away and will be in touch if we have any questions regarding your order. Standard polycarbonate orders are usually manufactured and despatched within 3 weeks of the order being placed. Specialist orders - for example if you choose hard-coating plastic - will take longer, but we will contact you and discuss this with you. If you need your order by a certain date then please let us know.
Can I fit the window myself?
Yes, it is straight forward to remove an existing window and install a RacePlastics polycarbonate window. There are plenty of guides on YouTube to help you do this. Unless otherwise stated, all windows are designed to be fitted into rubber seals, please contact us if you require bolt in versions.
Can I collect the order myself?
Yes, we usually courier orders out to our customers, but if you contact us, we can arrange for collection from our Leeds factory.
How can I change my order?
If you need to discuss or change your order in any way, please get in touch with the team at the earliest chance. We will always try to accommodate any changes but costs may be incurred if the manufacturing process has already started.
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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UK road legal warning
All but bronze & grey tinted front door windows are legal on UK roads.
Not found what you need?
Need a single window, or have a special requirement, no problem. Just let us know what you need.
The Lotus Exige S1 rally car
Some cars are built to be fun. Others are built to be fast. And then there’s the Lotus Exige S1, which was built for one purpose only, absolute domination on the track. This wasn’t just an Elise with a hardtop. This was a hardcore, stripped-down, track-bred monster that took the already brilliant handling of the Elise and cranked it up to 11.
Launched in 2000, the Exige S1 was essentially an Elise on steroids, lower, meaner, and packing serious attitude. The lightweight aluminium chassis remained, but everything else was turned up a notch. It had more power, better aerodynamics, and a handling setup so sharp it could make supercars look clumsy.
Under the bonnet sat a 1.8-litre Rover K-Series VHPD (Very High-Performance Derivative) engine, producing 177 horsepower. That might not sound like much, but when you consider the Exige only weighed 780kg, you start to understand just how rapid this thing was. 0-60mph took just 4.7 seconds, and with a redline at 8,000rpm, it loved to be revved hard. The sound of that engine screaming behind your head? Pure magic.
But power was only part of the story. The real secret to the Exige’s brilliance was its aerodynamics. That massive rear wing and deep front splitter weren’t just for show, they were proper, functional aero components designed to generate downforce, keeping the car planted at high speeds. Unlike the Elise, which was designed for both road and track use, the Exige was all about serious track performance. The downforce meant it could attack corners harder, brake later, and carry speed through bends like few other cars of its time.
The chassis and suspension setup were dialled in for racing, with uprated springs, dampers, and wider tyres giving it an insane amount of grip. The unassisted steering was pure and direct, feeding every bit of road surface straight to your fingertips. If the Elise was about lightweight agility, the Exige was about precision and aggression. It felt hardwired to your brain, responding to every input instantly and rewarding committed driving with an experience that was as close as you could get to a race car without a competition licence.
Inside, the Exige was as bare-bones as it got. No luxury materials, no unnecessary weight, just a basic dashboard, lightweight bucket seats, and a steering wheel that felt like an extension of your arms. Getting in and out wasn’t exactly graceful, but once you were strapped in, you didn’t care. Every drive in the Exige felt like a qualifying lap.
On track, the Exige S1 was unstoppable. It wasn’t just fast, it was surgically precise, embarrassing much more powerful cars with its cornering ability, braking performance, and overall balance. In the right hands, it could keep up with Porsches and Ferraris, proving that you don’t need huge power to be fast, you just need the right car.
But the Exige S1 wasn’t built for the masses. It was a limited-production special, with only around 600 units ever made, making it one of Lotus’ rarest and most sought-after models. It was built for purists, track-day addicts, and those who wanted a car that would challenge them every time they got behind the wheel.
Today, the Exige S1 is a legend. It’s one of the purest track-focused sports cars ever built, a car that reminds us of a time before electronic nannies and turbocharged excess. It’s raw, mechanical, unforgiving, and utterly brilliant.
If you ever get the chance to drive one, don’t hold back. Because the Exige S1 doesn’t do half-measures, it demands everything you’ve got. And if you give it that? It’ll give you one of the greatest driving experiences of your life.

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.
Need some advice?
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Why Polycarbonate Windows?
Find out whyLearn about what polycarbonate windows are, what benefits they offer and why you should use them.
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Perspex or Polycarbonate Windows?
Find out which oneFind out which you should use for your race windows, why, and which one will protect you the most whilst racing.
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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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