Create your ideal windows below, or contact the team if you have a specific requirement.

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Customise your windows:
£260.00 GBP
£260.00 GBP
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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.

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 1-2 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.

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:

  • Expertly crafted in the UK

    All of our windows and sliders are hand made to order by our team in the UK.

  • Motorsport compliant

    Our standard windows are made from UK compliant 4mm Polycarbonate.

  • FIA & hard-coated options

    We also offer FIA compliant 5mm & hard-coated options.

  • 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.

Start enquiry

The Ford Sierra mk1/Cosworth 3-door rally car

The Ford Sierra Mk1, introduced in the early 1980s, revolutionized the rally scene with its aerodynamic design and advanced engineering. Unlike its predecessors, the Sierra Mk1 featured a sleek, modern look with its distinctive sloping rear end, which significantly reduced drag and improved high-speed stability. The car's rear-wheel-drive layout and innovative independent rear suspension provided excellent handling and balance, crucial for the demanding twists and turns of rally stages. The Sierra Mk1 was initially equipped with a range of engines, but it was the high-performance versions like the RS Cosworth that truly shone in rallying. With a turbocharged 2.0-liter engine, the Sierra RS Cosworth delivered up to 224 horsepower, allowing it to compete fiercely against the top rally cars of its era.

In the rallying world, the Ford Sierra Mk1 made a significant impact, particularly in the Group A category. Its competitive debut was marked by its participation in various European and World Rally Championship (WRC) events. The Sierra RS Cosworth's reliability and robust performance made it a favourite among both factory teams and privateers. The car's success was highlighted by its notable victories and consistent top finishes in major rallies, showcasing Ford's engineering prowess and commitment to motorsport excellence. Drivers appreciated the Sierra Mk1 for its power, handling precision, and the sheer thrill of driving it on the edge. Today, the Ford Sierra Mk1 remains an iconic figure in rally history, remembered for its role in elevating the standards of rally car design and performance.

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.

View Sliders

Need some advice?

  • Why Polycarbonate Windows?

    Learn about what polycarbonate windows are, what benefits they offer and why you should use them.

    Find out why 

  • Perspex or Polycarbonate Windows?

    Find out which you should use for your race windows, why, and which one will protect you the most whilst racing.

    Find out which one 

  • Our Frequently Asked Questions

    Get the answers to key questions on products and services, including deliveries, collections and timescales.

    Find out more 

Need help with Ford Sierra mk1/Cosworth 3-door windows?

We love helping our customers find what they need - we are dedicated to making sure you enjoy your passion to the most. 

Contact our team