
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.
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 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.
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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.
Want some Window Advice?
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Why Polycarbonate Windows?
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Our Frequently Asked Questions
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